If the figure below is a regular polygon, find the value of x.

If The Figure Below Is A Regular Polygon, Find The Value Of X.

Answers

Answer 1

Answer:

Sum of the interior angles of a regular polygon is given by = (n-2)180°

where n is the no. of sides.

In the above figure, n= 10

Therefore, sum of the interior angles = (10-2)×180°

= 8×180°

= 1440°

Measure of each angle = 1440/10= 144°

Therefore, 10x+4=144

=> 10x= 140

=> x= 14

Answer 2

For the given figure the value of x is 14

Given  a regular polygon

A regular polygon is a polygon which has all sides equal and each side  subtends equal interior angle at the center.

According to the figure

We are given a regular polygon with 10 sides

The angle subtended  at the center is given as

(10x + 4)°

[tex]\rm The\; Sum \; of \; Interior\; angles = \bold {(n-2) \times 180\textdegree} ......(1) \\Where n = Number \; of \; sides \;of\; a \;polygon[/tex]

The Sum of interior angles =  ( 10-2) [tex]\times 180\textdegree[/tex]= 1440°

So the angle subtended by one side at the center is given as follows

1440°/ 10 = 144°

Since the angle subtended at the center = 144° = (10x + 4)°

so by solving this we can get

140 = 10x

x = 14  

For more information please refer to the link below

https://brainly.com/question/22831826


Related Questions

Paul observes that AB=AC and concludes that AB abd AC must be tangent to the circle. What is wrong with pauls reasoning?

Answers

Answer:

C

Step-by-step explanation:

Answer:

The answer should be C

Step-by-step explanation:

we know that

the triangle AOB is congruent with triangle AOC

because

AB=AC

OB=OC-----> the radius of the circle

The OB side is common

but

there is no additional information that allows me to calculate the OBA angle to determine if it is a right angle

therefore

the answer is the option

C.There is no indication that AB and AC are perpendicular to the radii at the points of intersection with the circle.

Thanks (4)

Each blue cube represents one cubic unit of volume. What is the volume of the large box? A) 20 cubic units B) 48 cubic units C) 288 cubic units D) 384 cubic units

Answers

Answer:

The volume of the large box is 384 cubic units

Step-by-step explanation:

Here, we have;

The number of cubes along the base of the front of the large box (width) = 8 cubes

The number of cubes along the base of the side of the large box (length) = 8 cubes

The number of cubes along the right  side of the front of the large box (the box height)  = 6 cubes

The volume of the large box = Length × Width × Height

∴ The volume of the large box = 8 cubes × 8 cubes × 6 cubes = 384 cubic units.

The volume of the large box = 384 cubic units.

Solve for a and d

6x^2+14x+4=(ax+b)(cx+d)

b=1 and c=2

Answers

Answer:

a = 3

d = 4

Step-by-step explanation:

6x^2+14x+4 = (ax+1)(2x+d)

6x^2+2x+12x+4

2x(3x+1)+4(3x+1)

(3x+1)(2x+4)

3 = a

4 = d

Answer:

Step-by-step explanation:

a=3, d=4

Find the area of the region enclosed by f(x) and the x axis for the given function over the specified u reevaluate f(x)=x^2+3x+4 x<3 f(x)=4x+10 x greater than or equal to 3 on -3,4

Answers

Answer:

A = 68 unit^2

Step-by-step explanation:

Given:-

The piece-wise function f(x) is defined over an interval as follows:

                       f(x) =  { x^2+3x+4    , x < 3

                       f(x) =  { x^2+3x+4     , x≥3

                        Domain : [ -3 , 4 ]

Find:-

Find the area of the region enclosed by f(x) and the x axis

Solution:-

- The best way to tackle problems relating to piece-wise functions is to solve for each part individually and then combine the results.

- The first portion of function is valid over the interval [ -3 , 3 ]:      

                       [tex]f(x) = x^2+3x+4[/tex]

- The area "A1" bounded by f(x) is given as:

                      [tex]A1 = \int\limits^a_b {f(x)} \, dx[/tex]

Where,  The interval of the function { -3 , 3 ] = [ a , b ]:

                     [tex]A1 = \int\limits^a_b {x^2+3x+4} \, dx\\\\A1 = \frac{x^3}{3} + \frac{3x^2}{2} + 4x |\limits_-_3^3 \\\\A1 = \frac{3^3}{3} + \frac{3*3^2}{2} + 4*3 - \frac{-3^3}{3} - \frac{3(-3)^2}{2} - 4(-3)\\\\A1 = 9 + 13.5 +12 + 9-13.5+12\\\\A1 =42 unit^2[/tex]

- Similarly for the other portion of piece-wise function covering the interval [3 , 4] :

                     [tex]f(x) = 4x+10[/tex]

- The area "A2" bounded by f(x) is given as:

                      [tex]A2 = \int\limits^a_b {f(x)} \, dx[/tex]

Where,  The interval of the function { 3 , 4 ] = [ a , b ]:

                     [tex]A2 = \int\limits^a_b {4x+10} \, dx\\\\A2 = 2x^2 + 10x |\limits_3^4 \\\\A2 = 2*(4)^2 + 10*4 - 2*(3)^2 - 10*3\\\\A2 = 32 + 40 - 18-30\\\\A2 =26 unit^2[/tex]

- The total area "A" bounded by the piece-wise function over the entire domain [ -3 , 4 ] is given:

                     A = A1 + A2

                     A = 42 + 26

                     A = 68 unit^2

Final answer:

To find the area enclosed by f(x) and the x-axis from x = -3 to x = 4 for the given piecewise function, calculate the integral of each piece separately and then sum the areas. The area is divided into two parts due to the function having different expressions before and after x = 3.

Explanation:

The student is asking to find the area under the curve of a given piecewise function f(x) on the interval from x = -3 to x = 4. Since the function is defined differently for x < 3 and x ≥ 3, the area calculation involves two parts:

Calculating the area under [tex]f(x) = x^2 + 3x + 4[/tex] from x = -3 to x = 3.Calculating the area under [tex]f(x) = 4x + 10[/tex] from x = 3 to x = 4.

The first part can be calculated using the integral of [tex]f(x) = x^2 + 3x + 4[/tex]from x = -3 to x = 3. The second part is the integral of [tex]f(x) = 4x + 10[/tex] from x = 3 to x = 4. The total area is the sum of these two areas. For this function, the areas are bounded above by the function and below by the x-axis, so all areas are considered positive.

Learn more about Area Under a Curve here:

https://brainly.com/question/31849536

#SPJ3

Two less than the product of 3 and x

Answers

Answer:

3x-2

Step-by-step explanation:

Answer:

3x-2

Step-by-step explanation:

"Less than" makes the whole expression changed.

If the less than was not there, it would have been 2-3x.

"Product" is multiplication. So it would be 3x.

The "Less than" also has less in it which is subtraction.

2.6-,2.061,2.601,2.34,2.7 order the following from least to greatest

Answers

Answer:

2.061, 2.34, 2.6, 2.601, 2.7

Step-by-step explanation:

Hello!

This is a bit hard to explain! If you want me to try, just comment.

I have arranged the sequence in ascending order below:

[tex]2.061,\:2.34,\:2.6,\:2.601,\:2.7[/tex].

Hope this helps!

Answer:

2.061, 2.34, 2.6, 2.601, 2.7

Step-by-step explanation:

Because the numbers all have a 2 in the ones place, you need to evaluate the numbers in the tenths place and the numbers with the lowest go first and so on :)

State the independent variable and the dependent variable in the linear relationship. Then find the rate of change for the situation. The cost of admission admission is ​$4848 for forfour pets pets and ​$9696 for eighteight pets pets. Determine the independent variable.

Answers

We have been given that the cost of admission is ​$48 for four pets and ​$96 for eight pets. We are asked to determine the independent variable and the dependent variable in the given linear relationship.

We can see that as the number of pets is increasing cost of admission is also increasing. This means that cost depends on number of pets.

Therefore, cost of admission is dependent variable and number of pets is independent variable.

To find rate of change, we will use slope formula.

We have been given two points on line that are (4,48) and (8,96).

[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]

Upon substituting the coordinates of our given points in slope formula, we will get:

[tex]m=\frac{96-48}{8-4}[/tex]

[tex]m=\frac{48}{4}[/tex]

[tex]m=12[/tex]

Therefore, the rate of change is $12 per pet.

students in art class make square tiles that are 5 inches long. They plan to make a row of tiles that is 4 feet 2 inches long. How many tiles will the students need to make?

Answers

10 tiles, because if you convert the row to all inches it would be 50 inches, then divide that my how long the tiles are (5) you would get 10.

The required students will need to make 10 tiles to create a row that is 4 feet 2 inches long.

What is simplification?

Simplification involves applying rules of arithmetic and algebra to remove unnecessary terms, factors, or operations from an expression. The goal is to obtain an expression that is easier to work with, manipulate, or solve.

Here,

To solve this problem, we first need to convert the length of the row from feet and inches to inches.

4 feet 2 inches is equal to (4 x 12) + 2 = 50 inches.

Next, we can divide the length of the row by the length of each tile to find the number of tiles needed:

Number of tiles = Length of row / Length of each tile

Number of tiles = 50 inches / 5 inches

Number of tiles = 10 tiles

Therefore, the students will need to make 10 tiles to create a row that is 4 feet 2 inches long.

Learn more about simplification here:

https://brainly.com/question/12501526

#SPJ7

MaryJo is considering investing in 2 different mutual funds. Option A has an annual interest rate of 7% and requires a principal of $10,000 with monthly deposits of $200 for 10 years. Option B has an annual interest rate of 9% and requires a principal of $10,000 with monthly deposits of $200 for 5 years.

Answers

The option A mutual funds will be more effective.

Step-by-step explanation:

Option A:

Principal amount = $10000

Monthly deposit = $200

Time = 10 years

Rate of interest = 7%

Total deposit = (200 x 12 x 10) + 10000

= 24000 + 10000

= $34000

Interest = (34000 x 7 ) /100

= 340 x 7

= $2380

Total amount = 34000 + 2380

= $36380

Option B:

Principal amount = $10000

Monthly deposit = $200

Time = 5 years

Rate of interest = 9%

Total deposit = (200 x 12 x 5) + 10000

= 12000 + 10000

= $22000

Interest = (22000 x 9 ) /100

= $1980

Total amount = 22000+1980

= $23980

The option A mutual funds will be more effective.

Answer:

What is the difference in the final balances of the two mutual funds?

Step-by-step explanation:

The difference is $12,400.

Solve the equation
x-23=5(2x+3)-2

Answers

Answer:

x=4.4

Step-by-step explanation:

expand the brackets

10x+15

full equation now

=x-23=10x+15-2 this makes it more simpler to find like terms

+2 on both sides

=x-25=10x+15

=+25 on both sides

x=10x+40

= -x on both sides

=9x=40

40/9=x

x=4.4

Answer:

[tex]x = - 4[/tex]

Step-by-step explanation:

[tex]x - 23 = 5(2x + 3) - 2 \\ x - 23 = 10x + 15 - 2 \\ - 23 - 15 + 2 = 10x - x \\ - 36 = 9x \\ \frac{ - 36}{9} = \frac{9x}{9} \\ - 4 = x[/tex]

The travel time it takes elevator A to reach height in meters is 0.8h+16 seconds. The travel time it takes elevator B to reach height in meters is -0.8h+12 seconds. How long would it take each elevator to reach ground level?

Answers

Answer:

Time taken by A = 16 seconds

Time taken by B = 12 seconds

Step-by-step explanation:

Given:

Two elevator and their respective time to reach certain height.

Here time is function of height.

Time taken by elevator A = 0.8(h)+16

Time taken by elevator B = -0.8(h)+12

We have to find the time taken by the elevator to reach ground level.

Accordingly:

We know that ground level the height will be zero meaning that (h=0).

Plugging the h values in the equation we can find the time taken by both the elevators to reach zero height that is the ground level.

⇒ [tex]t_A=0.8h+16[/tex]                      ⇒ [tex]t_B=-0.8h+12[/tex]

⇒ [tex]t_A=0.8(0)+16[/tex]                   ⇒ [tex]t_B=-0.8(0)+12[/tex]

⇒ [tex]t_A=16[/tex] sec                          ⇒ [tex]t_B=12[/tex] sec

So,

Time taken by elevator A and elevator B to reach the ground is 16 seconds and 12 seconds respectively.

An inverted pyramid is being filled with water at a constant rate of 25 cubic centimeters per second. The pyramid, at the top, has the shape of a square with sides of length 4 cm, and the height is 12 cm. Find the rate at which the water level is rising when the water level is 4 cm.

Answers

Answer:

[tex]\frac{225}{16} cm/s[/tex]

Step-by-step explanation:

We are given that

[tex]\frac{dV}{dt}=25cm^3/s[/tex]

Side of base=4 cm

l=w=4 cm

Height,h=12 cm

We have to find the rate at which the water level rising when the water level is 4 cm.

Volume of pyramid=[tex]\frac{1}{3}lwh=\frac{1}{3}l^2h[/tex]

[tex]\frac{l}{h}=\frac{4}{12}=\frac{1}{3}[/tex]

[tex]l=\frac{1}{3}h[/tex]

Substitute the value

[tex]V=\frac{1}{27}h^3[/tex]

Differentiate w.r.t t

[tex]\frac{dV}{dt}=\frac{3}{27}h^2\frac{dh}{dt}[/tex]

Substitute the values

[tex]25=\frac{1}{9}(4^2)\frac{dh}{dt}[/tex]

[tex]\frac{dh}{dt}=\frac{25\times 9}{16}=\frac{225}{16} cm/s[/tex]

Final answer:

Using the volume of a pyramid and the concept of similar triangles, we set up a proportion to find the changing base area at a specific water level. Then, applying the product rule for differentiation, we relate the rate of volume change to the rate of height change, which allows us to solve for the water level rising rate when it is 4 cm.

Explanation:

To find the rate at which the water level is rising when the water level is 4 cm in an inverted pyramid being filled at a constant rate of 25 cubic centimeters per second, we can use the concept of similar triangles and the volume of a pyramid.

The volume V of a pyramid is given by V = (1/3)Bh, where B is the base area and h is the height. As the pyramid fills, the water forms a smaller, similar pyramid whose volume increases at a rate of 25 cm3/s.

Since the sides of the smaller pyramid are proportional to the height, we can set up a proportion using the side length s of the water level: s/4 = 4/12. Solving for s gives us s = 4 * (4/12) = 4/3 cm. The base area B of the water at this level is B = s2 = (4/3)2 cm2.

To find the rate of the rise of water dh/dt, we use the relation dV/dt = (1/3) * d(Bh)/dt. Since B is also changing with h, we have to use the product rule for differentiation: dV/dt = (1/3)(B(dh/dt) + h(dB/dt)). However, because B is a function of h2, dB/dt can be expressed as a function of dh/dt. This allows us to solve for dh/dt.

what is the mean absolute deviation, round if needed.

78,93,84,97,100,77,94,96,93,92,90,89

Answers

Answer:

5.54

Step-by-step explanation:

5.54 is the (MAD)

You are wrapping a gift with the dimensions shown below. What is the least amount of wrapping paper you need?

Answers

Answer:2 identical side rectangle

2 identical end triangle

1 bottom rectangle

area of trialge=1/2bh

aera of rectangle=legnth tiems width

2 side rectangles are 5 by 10=50

times 2 since 2 of them 50*2=100

end triangles

1/2 times 8 times 3=12

2 of them

12 times 2=24

bottom

8 by 10

80

add everybody

100+24+80=204 in^2 i think this is how

Step-by-step explanation:

Answer:

2 identical side rectangle

2 identical end triangle

1 bottom rectangle

area of trialge=1/2bh

aera of rectangle=legnth tiems width

2 side rectangles are 5 by 10=50

times 2 since 2 of them 50*2=100

end triangles

1/2 times 8 times 3=12

2 of them

12 times 2=24

bottom

8 by 10

80

add everybody

100+24+80=204 in^2 i think this is how

Step-by-step explanation:

The equation of a line is y=8x+2 and the point (3,q) lies on this line. What is the value of q?

Answers

Answer:

q = 26

Step-by-step explanation:

Given that (3, q ) lies on the line, then the coordinates of the point make the equation true.

Substitute x = 3, y = q into the equation

q = 8(3) + 2 = 24 + 2 = 26

Final answer:

To determine the value of q for the point (3, q) on the line y=8x+2, substitute x with 3 to get y=26. Hence, q is 26, and the point is (3, 26).

Explanation:

To find the value of q for the point (3, q) that lies on the line with the equation y=8x+2, we substitute the x-coordinate of the point, which is 3, into the equation and solve for y. This gives us:

y = 8(3) + 2

y = 24 + 2

y = 26

Therefore, the value of q is 26, and the point is (3, 26). This demonstrates how to use a line's equation to find a specific point on the line. The question illustrates the algebraic relationship between the coordinates of a point on a line and the equation of the line itself.

Haley bought a 3-pound bag of cat food. She feeds her cat 6 ounces of cat food each day. Will the bag of cat food be enough to feed her cat for 7 days? Use the drop-down menus to explain.

Answers

Answer:

a -pound bag of cat food can enough to feed her cat for 7 days

Step-by-step explanation:

Given:

3-pound bag of cat food6 ounces of cat used per day

Number of cat food used in 7 days (in ounces): 7*6 = 42 ounces

As we know,1 pound (lb) is equal to 16 Ounces (oz)

<=> 42 ounces = 42 /16 = 2.625 pounds < 3-pound bag

So a -pound bag of cat food can enough to feed her cat for 7 days

Hope it will find you well.

Answer:

Yes it will

Step-by-step explanation:

Let's first work with a single unit so that our work will be a lot easier.

We are going to convert pounds to ounces and since 1 pound = 16 ounces, 3 pounds = 16 × 3 = 48 ounces of cat food.

And she feeds her cat 6 ounces of food each day,that means that in 7 days the cat will only be able to consume just 7 × 6 = 42 ounces,but remember that the amount of cat food bought is equal to 48 pounds.

This here means that the cat food will be enough to feed the cat for 7 days

The two cones are congruent
Determine the unknown measures of the cones.
A= units
B = units
C = units
Du units
5.2/B
6.2
V.42 units
Va
units

Answers

Answer:

3.1

4.2

5.2

42

Step-by-step explanation: They’re congruent so just copy what the other triangle has all you had to do was find the radius.

What is the measure of

Answers

Answer:

C: 107

Step-by-step explanation:

135-28 = 107

Answer:

it would have to be 107 bro

Step-by-step explanation:

Power +, Inc. produces AA batteries used in remote-controlled toy cars. The mean life of these batteries follows the normal probability distribution with a mean of 38 hours and a standard deviation of 5.8 hours. As a part of its quality assurance program, Power +, Inc. tests samples of 9 batteries.a. What can you say about the shape of the distribution of the sample mean?
b. What is the standard error of the distribution of the sample mean? (Round your anser to 4 decimals places.)
c. What proportion of the samples will have a mean useful life of more than 39.5 hours? (Round z value to 2 decimal places and final answer to 4 decimal places)
d. What proportion of the sample will have a mean useful life greater than 37.5? (Round z value to 2 decimal places and final answer to 4 decimal places.)

Answers

Answer:

a) For this case we select a sample size of n=9. And we know that the distribution of X is normal so then the distribution for the sample mean is given by:

[tex]\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})[/tex]

b) [tex] SE = \frac{\sigma}{\sqrt{n}} =\frac{5.8}{\sqrt{9}} =1.9333[/tex]

c) [tex] P\bar X >39.5)[/tex]

And we can use the z score given by:

[tex] z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

And if we find the z score for 39.5 we got:

[tex] z = \frac{39.5-38}{\frac{5.8}{\sqrt{9}}}= 0.78[/tex]

And using the complement rule we got:

[tex] P(z >0.78) =1-P(Z<0.78) = 1-0.7823= 0.2177[/tex]

d) [tex] P\bar X >37.5)[/tex]

And we can use the z score given by:

[tex] z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

And if we find the z score for 37.5 we got:

[tex] z = \frac{37.5-38}{\frac{5.8}{\sqrt{9}}}= -0.26[/tex]

And using the complement rule we got:

[tex] P(z >-0.26) =1-P(Z<-0.26) = 1-0.3974= 0.6026[/tex]

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the life of batteries of a population, and for this case we know the distribution for X is given by:

[tex]X \sim N(38,5.8)[/tex]  

Where [tex]\mu=38[/tex] and [tex]\sigma=5.8[/tex]

Part a

For this case we select a sample size of n=9. And we know that the distribution of X is normal so then the distribution for the sample mean is given by:

[tex]\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})[/tex]

Part b

The standard error is given by:

[tex] SE = \frac{\sigma}{\sqrt{n}} =\frac{5.8}{\sqrt{9}} =1.9333[/tex]

Part c

We want this probability:

[tex] P\bar X >39.5)[/tex]

And we can use the z score given by:

[tex] z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

And if we find the z score for 39.5 we got:

[tex] z = \frac{39.5-38}{\frac{5.8}{\sqrt{9}}}= 0.78[/tex]

And using the complement rule we got:

[tex] P(z >0.78) =1-P(Z<0.78) = 1-0.7823= 0.2177[/tex]

Part d

We want this probability:

[tex] P\bar X >37.5)[/tex]

And we can use the z score given by:

[tex] z = \frac{\bar X -\mu}{\frac{\sigma}{\sqrt{n}}}[/tex]

And if we find the z score for 37.5 we got:

[tex] z = \frac{37.5-38}{\frac{5.8}{\sqrt{9}}}= -0.26[/tex]

And using the complement rule we got:

[tex] P(z >-0.26) =1-P(Z<-0.26) = 1-0.3974= 0.6026[/tex]

Final answer:

The distribution of the mean life of Batteries produced by Power+, Inc. follows Normal distribution. The standard error is calculated to be 1.9333. Using Z scores, it's discovered that approximately 21.77% of samples will have a mean life more than 39.5 hours while around 60.26% samples will have a mean useful life more than 37.5 hours.

Explanation:

Understanding the Distribution of the Mean Life of Batteries

a. The distribution of the sample mean should approximate a normal distribution because we know the distribution of the population (life of the batteries) is normal. The expectation is that the sample mean should also follow normal distribution, based on the Central Limit Theorem.

b. The standard error of the distribution of the sample mean, is calculated as the standard deviation divided by the square root of the number of samples. Therefore, the standard error is 5.8 / sqrt(9), that is approximately 1.9333.

c. To find the proportion of samples with a mean useful life of more than 39.5 hours, we first find the Z score for 39.5. The Z score is calculated by (sample mean - population mean) / standard error. Therefore, Z = (39.5 - 38) / 1.9333 = approximately 0.78 (rounded to 2 decimal places). Looking this up on a Z table gives us 0.7823. However, because we want the proportion where it is more than 39.5 hours, we need to subtract this from 1. So, 1-0.7823 = 0.2177 (i.e., 21.77% samples will have a mean useful life more than 39.5 hours).

d. Following the same procedure, the Z score for a sample mean of 37.5 is approx negative -0.26 (rounded to 2 decimal places) using the same calculation as above. Looking this up on a Z table gives us 0.3974. But, because we want the proportion greater than 37.5 hours, we need to subtract this from 1. So, 1-0.3974 = 0.6026 (i.e., 60.26% samples will have a mean useful life more than 37.5 hours).

Learn more about Normal Distribution here:

https://brainly.com/question/34741155

#SPJ3

select all of the ratios that are equivalent to 4 to 7.
5/8
12/10
8.14
5 to 10
16/28
9 to 16​

Answers

Answer:

[tex]\frac{16}{28}[/tex]

Step-by-step explanation:

Question asked:

Select all of the ratios that are equivalent to 4 to 7.

1) 5/8

2) 12/10

3) 8.14

4) 5 to 10

5) 16/28

6) 9 to 16​

Solution:

To know the ratios are equivalent to [tex]\frac{4}{7}[/tex] or not, we have to check each by cross multiplication:-

1) [tex]\frac{5}{8}[/tex]

[tex]\frac{4}{7} =\frac{5}{8} \\ \\[/tex]

By cross multiplication:

[tex]4\times8=5\times7\\ \\ 32=35[/tex]

Not equivalent.

2) [tex]\frac{12}{10}[/tex]

[tex]\frac{4}{7} =\frac{12}{10} \\ \\[/tex]

By cross multiplication:

[tex]4\times10=12\times7\\ \\ 40=84[/tex]

Not equivalent.

3) 8.14 = [tex]\frac{814}{100} \ eliminating\ decimal[/tex]

[tex]\frac{4}{7} =\frac{814}{100} \\ \\[/tex]

By cross multiplication:

[tex]4\times100=814\times7\\ \\ 400=5698[/tex]

Not equivalent.

4) [tex]\frac{5}{10}[/tex]

[tex]\frac{4}{7} =\frac{5}{10} \\ \\[/tex]

By cross multiplication:

[tex]4\times10=5\times7\\ \\ 40=35[/tex]

Not equivalent.

5)[tex]\frac{16}{28}[/tex]

[tex]\frac{4}{7} =\frac{16}{28} \\ \\[/tex]

By cross multiplication:

[tex]4\times28=16\times7\\ \\ 112=112[/tex]

Yes, this is equivalent.

6) [tex]\frac{9}{16}[/tex]

[tex]\frac{4}{7} =\frac{9}{16} \\ \\[/tex]

By cross multiplication:

[tex]4\times16=9\times7\\ \\ 64=63[/tex]

Not equivalent.

Thus, only [tex]\frac{16}{28}[/tex] is equivalent.

An IQ test is designed so that the mean is 100 and the standard deviation is 1414 for the population of normal adults. Find the sample size necessary to estimate the mean IQ score of statistics students such that it can be said with 9090​% confidence that the sample mean is within 66 IQ points of the true mean. Assume that sigmaσequals=1414 and determine the required sample size using technology. Then determine if this is a reasonable sample size for a real world calculation.

Answers

Answer:

37

Step-by-step explanation:

The first thing is to calculate critical z factor

the alpha and the critical z score for a confidence level of 90% is calculated as follows:

two sided alpha = (100% - 90%) / 200 = 0.05

critical z factor for two sided alpha of .05 is calculated as follows:

critical z factor = z factor for (1 - .05) = z factor for (.95) which through the attached graph becomes:

critical z factor = 2.58

Now we have the following formula:

ME = z * (sd / sqrt (N) ^ (1/2))

where ME is the margin of error and is equal to 6, sd is the standard deviation which is 14 and the value of z is 2.58

N the sample size and we want to know it, replacing:

6 = 2.58 * (14 / (N) ^ (1/2))

solving for N we have:

N = (2.58 * 14/6) ^ 2

N = 36.24

Which means that the sample size was 37.

(4 × 6) ÷ (2 + 4) ÷ (8 ÷ 4) =

Answers

74.839 is the answer

Answer:

2

Step-by-step explanation:

24÷ 6÷ 2=2

temperatures in f can be converted in c using the formula c=5(f-32)/9
Make F the subject of the formula.
give your answer in the form aC+b/c where a, b and c are all positive intergers.

Answers

Final answer:

To make F the subject of the formula in the Celsius to Fahrenheit conversion, multiply by 9, divide by 5, and then add 32, resulting in F = (9/5)C + 32.

Explanation:

To make F the subject of the formula when given the Celsius to Fahrenheit conversion formula c = 5(f - 32)/9, we start by isolating Fahrenheit on one side of the equation. Here's a step-by-step process:

Multiply both sides of the equation by 9: 9c = 5(f - 32).Divide both sides by 5: (9/5)c = f - 32.Add 32 to both sides to isolate f: f = (9/5)c + 32.

Now the formula for F in terms of C is in the form aC + b with a = 9/5, b = 32, and there's no c as in the denominator since the conversion is direct.

[tex]\( F = \frac{9c + 160}{5} \).[/tex] In form [tex]\( aC + \frac{b}{c} \), \( a = 9 \), \( b = 160 \),[/tex] and [tex]\( c = 5 \).[/tex]

Let's break down the process of rearranging the formula step by step.

Given formula: [tex]\( c = \frac{5(F - 32)}{9} \)[/tex]

We want to isolate [tex]\( F \)[/tex] on one side of the equation.

1. Multiply both sides by [tex]\( \frac{9}{5} \):[/tex]

[tex]\[ \frac{9}{5} \cdot c = \frac{9}{5} \cdot \frac{5(F - 32)}{9} \][/tex]

  This cancels out the fraction on the right side.

  [tex]\[ \frac{9}{5} \cdot c = F - 32 \][/tex]

2. Add 32 to both sides to isolate [tex]\( F \):[/tex]

[tex]\[ \frac{9}{5} \cdot c + 32 = F \][/tex]

Now, [tex]\( F \)[/tex] is isolated on the right side of the equation.

3. Rewrite [tex]\( F \)[/tex] in the required form [tex]\( aC + \frac{b}{c} \):[/tex]

 [tex]\[ F = \frac{9}{5}c + 32 \][/tex]

  To express [tex]\( F \)[/tex] in the required form, we can rewrite [tex]\( \frac{9}{5}c \) as \( \frac{9c}{5} \),[/tex]so the form becomes [tex]\( aC + \frac{b}{c} \).[/tex]

  So, [tex]\( a = 9 \), \( b = 32 \), and \( c = 5 \).[/tex]

4. Final Form:

 [tex]\[ F = \frac{9c + 160}{5} \][/tex]

  So, in the form [tex]\( aC + \frac{b}{c} \),[/tex] we have [tex]\( a = 9 \), \( b = 160 \), and \( c = 5 \).[/tex]

Solve negative 7 over 3, the whole multiplied by x minus 3 equals negative 52.

Answers

Answer:

x= [tex]\frac{135}{7}[/tex]

Step-by-step explanation:

1. [tex]-\frac{7}{3} (x-3)=-52[/tex]

2. combine -7/3(x - 3)

  =    [tex]-\frac{7}{3}x-7 = -52[/tex]

3. Do combine like terms on both sides

   =   -52 + -7 = -45

4. left with, [tex]-\frac{7}{3}x = -45[/tex]

5. divide -45 by -7/3

6. left with, [tex]x = \frac{135}{7}[/tex]

Answer:

21

Step-by-step explanation:]

plz mark me the Brainliest

Write .00026 as a multiple of a power of 10​

Answers

Step-by-step explanation:

[tex]0.00026 = 2.6 \times {10}^{ - 4} \\ [/tex]

Jacob wants to enlarge a triangle with sides 7, 12, and 12 inches to create a similar triangle. If the shortest side of the enlarged triangle is 24.5 inches, how long will each of the other two sides be?

Answers

Answer:

42

Step-by-step explanation:

If the shortest side is 7 and it is enlarged to be 24.5.

It is enlarged by a scale of 3.5.

so if you scale 12 by 3.5

then you get 42

What is the value of x when solving the equation Negative 2 x + (negative 8) = 2 x + 8 using algebra tiles?
x = negative 4
x = negative 2
x = 2
x = 4

Answers

Answer:

the first option ...-4

Step-by-step explanation:

The solution is Option A.

The value of the equation is x = -4

What is an Equation?

Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.

It demonstrates the equality of the relationship between the expressions printed on the left and right sides.

Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.

Given data ,

Let the equation be represented as A

Now , the value of A is

A = Negative 2 x + (negative 8) = 2 x + 8

Substituting the values in the equation , we get

( -2x ) + ( -8 ) = 2x + 8   be equation (1)

On simplifying the equation , we get

-2x - 8 = 2x + 8

Adding 8 on both sides of the equation , we get

2x + 16 = -2x

Adding 2x on both sides of the equation , we get

4x + 16 = 0

Subtracting 16 on both sides of the equation , we get

4x = -16

Divide by 4 on both sides of the equation , we get

x = -4

Therefore , the value of x is -4

Hence , the value of the equation is x = -4

To learn more about equations click :

https://brainly.com/question/19297665

#SPJ2

The first three terms of a geometric sequence are as follows.
-3, 6, -12
Find the next two terms of this sequence.
Give exact values (not decimal approximations).

Answers

Answer:

24, -48

Step-by-step explanation:

In this geometric sequence, the previous number is being multiplyed by -2 each time

This said the next number is 24.

-12*-2=24

and the next one is -48.

24*-2=-48

Final answer:

The next two terms of the geometric sequence -3, 6, -12 are 24 and -48, found by repeatedly multiplying with the common ratio of -2.

Explanation:

The first three terms of the given geometric sequence are -3, 6, and -12. To find the next two terms in this sequence, we need to determine the common ratio between the terms. The common ratio (r) is the factor by which we multiply one term to get the next term. In this case, 6 divided by -3 equals -2, and similarly, -12 divided by 6 also equals -2. This confirms that our common ratio is -2.

Now, to find the fourth term of the sequence, we multiply the third term (-12) by the common ratio (-2):

-12 × -2 = 24

To find the fifth term, we multiply the fourth term (24) by the common ratio (-2):

24 × -2 = -48

Therefore, the fourth and fifth terms of the geometric sequence are 24 and -48, respectively.

What is the value of x when x + 10 = 42

Answers

Answer: 32

Step-by-step explanation:

Use a fact family. 42 - 10 = 32.

You will get 32 as an answer.

So x = 32.

Answer:

32

Step-by-step explanation:

If x+10=42 then x=42-10 which makes x=32

A kangaroo hooped 3,520 yards to the lake with her baby in her pouch. She hopped the remaining 5,280 yard without her baby in her pouch. How many miles did the Kangaroo hop to the lake?

Answers

Answer:

5 miles

Step-by-step explanation:

since she hopped in yards you must mulitiply both numbers 3520 and 5280 by 3 since there are three feet in a yard. then add together then divide the sum by 5280 since a mile is 5280 feet.

3520 X 3 = 10560

5280 X 3 = 15840

10560 + 15840 = 26400

26400/ 5280 = 5

Other Questions
f(-4) in the function f(x) = -2x - 3? "No person shall be registered as an elector of this State or be allowed to vote in any election herein, unless he be able to read and write any section of the constitution of the State of Oklahoma; but no person who was, on January 1, 1866, or at any time prior thereto, entitled to vote under any form of government, or who at that time resided in some foreign nation, and no lineal descendant of such person, shall be denied the right to register and vote because of his inability to so read and write sections of such constitution." What requirement needed to be met in order to vote in Oklahoma, according to this 1910 state law? In 1957, in Little Rock, Arkansas, nine African-American students attempted to integrate the citys high school. Because Governor Orville Faubus was up for reelection that year, he responded to the attempt by utilizing the state National Guard to . President Eisenhower countered by sending in U.S. troops to . The governor countered that move by in the state. Which is a dominant trait that Mendel observed in pea plant A. Bumpy podsB. Short heightC. Yellow seedsD. White flowers What is U(2.4, -1) reflected across the y-axis? While hiking with a friend in the Mojave desert Lonny comes face-to-face with a rattlesnake on the trail. Lonny rapidly enters the first stage of Selyes General Adaptation Syndrome. His brainstem initiates the release of the neurotransmitter norepinephrine, which increases his vigilance and fear. This is part of his ____. a forest ranger in a 140-foot observation tower sees a fire moving in a direct path toward a lake. the angle of depression to the fire is 3 and the angle of depression to the lake is 8. to the nearest foot, how close is the fire to the lake? In the context of this story, how do people face death? How do the characters inthe text face death differently from each other? How does this experience differwith how individuals face death in modern America? (The Devil) What is the difference between a mechanical wave and an electromagnetic wave?OA mechanical wave travels through empty space, while an electromagnetic wave travels through matter.O A mechanical wave has a short wavelength, while all electromagnetic waves have long wavelengths.O A mechanical wave has a high frequency, while all electromagnetic waves have low frequencies.O Amechanical wave travels through matter, while an electromagnetic wave travels through empty space. Which statement best describes what the 13th United States Colored Troops accomplished at the Battle of Nashville Please help !!!!!!!!!!!! 1. If there is an even number of signs, thesolution is 48) A laboratory tested twelve eggs and found that the average amount of cholesterol in each egg was 185 milligrams, with a sample standard deviation of 17.6 mg. Construct a 95% confidence interval for the mean cholesterol content in a typical egg. Use the problem below to answer the question:34 grams of carbon react with an unlimited amount of H2O. The reaction is:C + H20 - CO + H2Is this equation balanced?Yes or No An insurance company assesses all employees' current job skills and creates road maps for them outlining the competencies they need to advance within the company. The company then makes sure they get the training they need, including coaching and mentoring, classroom training. This is an example of________. a) making a career development plan.b) succession management.c) re-structuring.d) ethical assessment. Which phrase matches the algebraic expression below?(PLEASE HELP) 2(x 7) + 10A. Two times the sum of x and seven plus tenB. Two times the difference of x and seven plus tenC. Two times x minus seven plus tenD. Two times x minus the sum of seven and ten 15. The heart of After Action Review is answering five questions. (1) What was our intention?; (2) What went well?; (3) What could have gone better?; and (4) What should we have done differently? What is the fifth question? Just need the answer to c. Colonists from which of the following European nations generally had the most cooperative relations with American Indians? How did Rome govern the new territories? Rome required people to speak only Latin. Rome allowed local people to elect a governor. Rome divided the new territories into provinces. Rome barred conquered men from serving in the army.