a worker uses 450 inches of steel wire to make 300 springs of the same size. At this rate how many inches of steel wire are needed to make 1 spring?

Answer:

3/2 units^2

Step-by-step explanation:

The area of the entire circle is 16π.  What is the area of a sector of this circle if the central angle (not angel) is 8/5 radians?

Formula:   (fraction of circle represented by the sector)(area of the circle

Area of the sector described above is

  8/5 radians                                         8*16π square units

----------------------- * 16π square units = ------------------------------ = 3/2 units^2

    2π radians                                                      10π

Answer:

y=(1/4)x-3

Step-by-step explanation:

To find the equation of a line, use the following equation:

y=mx+b where m is the slope (rise/run) and b is the y-intercept.

The slope of the line is 1/4 and the y-intercept is -3. Just fill it into the problem to get the answer y=(1/4)x-3. Hope this helps! :)

Answer:

0.22

Step-by-step explanation:

Looking at the Venn Diagram,

the intersection "0.43" means coming via bus and having after-school activity.

"0.12" means students who does not come by bus and who does not have after-school activity.

Now, we want probability of "having after-school" activity (the area A) but NOT COMING VIA BUS (area outside B).

We want the area outside B but within A.

That area is labeled 0.22

Hence,

The probability that the student has an after-school activity and does NOT come to school by bus is 0.22

You can evaluate every percentage in two simple steps:

First of all, divide your number by 100. This will give you the 1% of your quantity:

[tex]\dfrac{76200}{100}=762[/tex]

Then, multiply the 1% by 27 to get the 27%:

[tex]762\cdot 27=20574[/tex]

27% of 76,200 is 20,574.

"To calculate 27% of 76,200, one can multiply the total amount by the percentage value, expressed as a decimal or fraction. Here is the step-by-step calculation:

First, convert the percentage to a decimal by dividing by 100:

"To calculate 27% of 76,200, one can multiply the total amount by the percentage value, expressed as a decimal or fraction. Here is the step-by-step calculation:

First, convert the percentage to a decimal by dividing by 100:

[tex]\[ 27\% = \frac{27}{100} = 0.27 \][/tex]

Next, multiply this decimal by the total amount:

[tex]\[ 0.27 \times 76,200 = 20,574 \][/tex]

Therefore, 27% of 76,200 is 20,574.

The answer is: 20,574."

Answer:

A

Step-by-step explanation:

bruh

Answer:

C

Step-by-step explanation:

just my guess-

Answer:

x = -6         x=-3

Step-by-step explanation:

To find the roots, we set it equal to zero

(x + 6)(x + 3) =0

Using the zero product  property

x+6 =0        x+3 =0

x = -6         x=-3

Answer:

x=-6,x=-3

Step-by-step explanation:

To solve this question we will have to solve one after another

(X+6)(x+3)

Let equate the equation to zero

So

(X+6)(x+3)=0

X+6=0

Substrate 6 from both sides

X=-6

X+3=0

Substrate 3 from both sides

x=-3

Therefore x=-6,x=-3

Answer: -(pi)/10 radians or D on Edge

Step-by-step explanation: correct answer on edge

Answer:

4

Step-by-step explanation:

Write y6 as a product of two powers with the same base in four different ways, using negative or zero exponents in each product.

Answer:

Round pizza

Step-by-step explanation:

Area of the Round Pizza =[tex]49 \pi[/tex] square inches.

Area of the Square Pizza = 49  square inches.

Recall that: [tex]\pi =\frac{22}{7}[/tex]

Therefore:

Area of the Round Pizza =[tex]49 \pi=49X\frac{22}{7}=154 \:Square \:Inches[/tex]

Since 154 is greater than 49(154>49)

If Steve wants to eat more crust, he will buy the round pizza.

Hundredths as fractions and decimals is given below.

Step-by-step explanation:

To learn more about this :

www.brainly.com/subject/math

Answer:

The answer is B.

Step-by-step explanation:

The picture shows a right-angle triangle which is 90°. So you have to add up the expressions, in order to solve for x :

35° + 5x° = 90

Answer:

For #1, the slope is [tex]\frac{2}{2}[/tex], which could also be written as 1

For #2, the slope is [tex]\frac{1}{4}[/tex]

For #3, the slope is [tex]-\frac{2}{1}[/tex], which could also be written as -2

Step-by-step explanation:

Remember, [tex]\frac{rise}{run}[/tex]

Answer: 64 + 32 + 16 + 8 + 4 + 2 + 1 + .5 + .25 = 127.75

Step-by-step explanation: the sequence divides the next number by 2 ; 64/2 = 32, 32/2 = 16, etc

Answer:

127.75

Step-by-step explanation:

Final answer:

there were 7 horses and 8 chickens in the barn.

Explanation:

To represent the situation with a system of equations, let's assume that the number of horses is represented by 'h' and the number of chickens is represented by 'c'.

We know that there are a total of 15 animals, so we can write the equation: h + c = 15.

We also know that the total number of legs is 44, and since each horse has 4 legs and each chicken has 2 legs, we can write the equation: 4h + 2c = 44.

To solve this system of equations, we can use the method of substitution or elimination. Substituting h = 15 - c into the second equation, we get 4(15 - c) + 2c = 44. Simplify and solve for c to find the number of chickens, then substitute the value of c back into the first equation to find the number of horses.

Let's solve this system of equations:

h + c = 15

4h + 2c = 44

We can solve this using the method of substitution:

h = 15 - c

Substituting this into the second equation:

4(15 - c) + 2c = 44

60 - 4c + 2c = 44

-2c = 44 - 60

-2c = -16

c = -16/-2

c = 8

Substituting the value of c back into the first equation:

h + 8 = 15

h = 15 - 8

h = 7

So, there were 7 horses and 8 chickens in the barn.

Answer:

D

Step-by-step explanation:

You can drive anywhere less than or equal to 30 mph, and it'd be legal

Answer:

3 =x

Step-by-step explanation:

f(x) = -10x + 45

f(x) = 15

15 = -10x +45

Subtract 45 from each side

15-45 = -10x+45-45

-30 = -10x

Divide each side by -10

-30/-10 = -10x/-10

3 =x

Answer:

C

Step-by-step explanation:

for every value of x we put in the option the only function which satisfies the table of data is C

Answer:

(-2, 1)

Step-by-step explanation:

The coordinates of the vertex A of square ABCD is (1, 6).

Translation is a type of transformation of geometrical figures. After translation, the original figure is shifted from a place to another place without affecting it's size.

Given that,

A square ABCD undergoes a translation of (-4, -1) and a rotation of 90° to form the square A''B''C''D''.

Let (x, y) be the coordinates of A.

After the translation of (-4, -1), it becomes,

A'(x - 4, y - 1)

When it rotates to 90°, it becomes,

A''(-(y - 1), x - 4) = A''(1 - y, x - 4) = (-5, -3)

1 - y = -5 ⇒ y = 1 + 5 = 6

x - 4 = -3 ⇒ x = 1

Coordinates are (1, 6)

Hence the coordinates of A is (1, 6).

Learn more about Translations here :

https://brainly.com/question/12463306

#SPJ7

The complete question is as follows :

Square A"B"C"D" is the final image after the rule T -4, -1 • R 0, 90° (x, y) was applied to square ABCD. What are the coordinates of vertex A of square ABCD?

n a coordinate plane, a square A double-prime B double-prime C double-prime D double-prime has points (negative 5, negative 3), (negative 3, negative 1), (negative 1, negative 3), (negative 3, negative 5).

Answer:

The 90% confidence interval for the proportion of married couples with three personality preferences in common compared  with the proportion of couples with two preferences in common is (-0.081, 0.025).

Step-by-step explanation:

The (1 - α)% confidence interval for difference in proportion formula is,

[tex]CI=(\hat p_{1}-\hat p_{2})\pm z_{\alpha/2}\sqrt{\frac{\hat p_{1}(1-\hat p_{1})}{n_{1}}+\frac{\hat p_{2}(1-\hat p_{2})}{n_{2}}}[/tex]

The given information is:

n₁ = 375,

n₂ = 571,

X₁ = 132,

X₂ = 217.

Compute the sample proportion as follows:

[tex]\hat p_{1}=\frac{X_{1}}{n_{1}}=\frac{132}{375}=0.352\\\\\hat p_{2}=\frac{X_{2}}{n_{2}}=\frac{217}{571}=0.38\\[/tex]

For the 90% confidence level, the z-value is,

z₀.₀₅ = 1.645

*Use a z-table.

Compute the 90% confidence interval for the difference in proportion as follows:

[tex]CI=(\hat p_{1}-\hat p_{2})\pm z_{\alpha/2}\sqrt{\frac{\hat p_{1}(1-\hat p_{1})}{n_{1}}+\frac{\hat p_{2}(1-\hat p_{2})}{n_{2}}}[/tex]

     [tex]=(0.352-0.38)\pm 1.645\sqrt{\frac{0.352(1-0.352)}{375}+\frac{0.38(1-0.38)}{571}}\\=-0.028\pm 0.05256\\=(-0.08056, 0.02456)\\\approx (-0.081, 0.025)[/tex]

The 90% confidence interval for the proportion of married couples with three personality preferences in common compared  with the proportion of couples with two preferences in common is (-0.081, 0.025).

This confidence interval implies that the true difference between the proportions lies in this interval with probability 0.90.

The 90% confidence interval for the difference in proportions of married couples with two and three personality preferences in common is (0.027, 0.089). This indicates that with 90% confidence, the proportion of couples with two preferences in common is significantly higher.

Firstly, we need to find the proportions for both samples. The proportion for three personality preferences in common is 132/375 = 0.352 and for two personality preferences in common is 217/571 = 0.380.

Next, to compute the standard error, we use the formula √[ P(1 - P) / n ]. For three personality preferences we get √[ 0.352(1 - 0.352) / 375] = 0.026. And for two personality preferences we obtain √[ 0.380(1 - 0.380) / 571] = 0.021.

From these, the difference in the two sample proportions can be calculated, which is 0.380 - 0.352 = 0.028. The standard error of the difference can then be calculated as √( 0.026 ^ 2 + 0.021 ^ 2) = 0.033. At the 90% confidence level, the z-score is 1.645.

To calculate the confidence interval, note that 0.028 ± 1.645 * 0.033 is the equation we are trying to solve. This produces a range from 0.027 to 0.089.

So, the 90% confidence interval for difference in proportions is (0.027, 0.089), meaning that with 90% confidence, the proportion of couples with two preferences in common is significantly higher than those couples with three personality preferences in common.

https://brainly.com/question/34700241

#SPJ12

Given:

The top of the lid to a small container is in the shape of a square with a side length of 6 centimeters.

We need to determine the area of the top of the lid.

Area of the top of the lid:

The area of the top of the lid can be determined using the formula,

[tex]A=s^2[/tex]

where s is the side length of the square

Substituting [tex]s=6[/tex] in the above formula, we get;

[tex]A=6^2[/tex]

[tex]A=36[/tex]

Therefore, the area of the top of the lid is 36 cm²

Hence, Option C is the correct answer.

The probability of drawing a girl's name from a hat with 24 students of which 12 are boys is 1/2 or 50%.

The question is regarding the probability that a randomly drawn name is a girl's if there are 24 students in a class with 12 boys. Since the number of girls must be 24 total students minus 12 boys, which leaves us with 12 girls, the probability of drawing a girl's name is the number of girls over the total number of students. Therefore, the probability is 12 girls divided by 24 students, which simplifies to 1/2.

The statements which correctly describes a cross section of the right-rectangular prism if the base is a rectangle measuring 15 in. by 8 in. are: B, D and F.

Mathematically, the surface area of a right-rectangular prism is calculated by using this formula:

A = 2(wl + hl + hw)

Where:

Based on the surface area of this right-rectangular prism, we can deduce the following points:

Read more on rectangular prism here: brainly.com/question/3867601

#SPJ2

Answer:

432π cm² or 1356.48 cm²

Step-by-step explanation:

The area of a circle is πr²

The area of the disks are 144π and 576π.

576π-144π = 432π

432π ≈ 1356.48 cm²

To find the difference in areas of two circles, calculate the area of each circle using the formula πr² and then subtract the smaller area from the larger one. For Alice's discs with diameters 12 cm and 24 cm, the areas are 36π and 144π square cm respectively, and their difference is 108π square cm.

To find the difference in the areas of Alice's two flying disks, first we need to calculate the area of each disk. The formula for the area of a circle (or disk) is πr², where r is the radius of the circle. The radius is half of the diameter, so for the first disk, the radius is 6 cm and for the second disk, the radius is 12 cm.

The area of the first disk is π*(6 cm)² = 36π square cm. The area of the second disk is π*(12 cm)² = 144π square cm. The difference between these two areas is 144π - 36π = 108π square cm.

https://brainly.com/question/28653879

#SPJ11

Answer:

None of the above

Step-by-step explanation:

None of the above polynomials are in standard form.

Answer:

102

Step-by-step explanation:

Since we know that the numbers are two consecutive even numbers, we can write an equation like this where n represents the 2 numbers.

n + (n+2) = 206

Simplify the left side:

n + (n+2) = 206 -----> 2n+2 = 206

Subtract 2 from both sides:

2n = 206-2 -----> 2n = 204

Now divide 204 by 2:

n = 204/2 -----> n = 102

The smallest of two consecutive even numbers, whose sum is 206, is 102.

The question is asking for the smallest of two consecutive even numbers whose sum is 206. Let’s denote the smaller even number by n. The next consecutive even number would be n+2 (since even numbers are two units apart).

The problem states that the sum of these two numbers is 206 which can be written in the equation form as n + (n+2) = 206. It simplifies to 2n + 2 = 206. Subtracting 2 from both sides, we get 2n = 204. And finally, dividing by 2, we find that n = 102. So, the smallest number is 102.

https://brainly.com/question/37032385

#SPJ3

Answer:

51 and 42

Step-by-step explanation:

Use

x + y = 93

x - y = 9

Add those two equations together and you get 2x = 102

*y is not in the equation anymore because y + -y = 0*

Divide both sides by 2

x = 51

plug x into one of the equations; let's use x + y = 93

Then you get, 51 + y = 93

Subtract both sides by 51 and you get y = 42

Plug both in the other equation to make sure the numbers work.

51 + 42 = 93; true

51 - 42 = 9; true

Answer:

42 and 52

Step-by-step explanation:

Answer:

20 plus 4

please mark me brainliest

Step-by-step explanation:

20 plus 4 is the expression shows partial quotients of 96 divided by 4.

Here, we have,

given that,

Which expression shows partial quotients of 96 divided by 4.

now, we get,

96 divided by 4

i.e. 96/4

=24

as we know that,

24 = 20 + 4

so, we get,

24 equals 20 plus 4

i.e. 96 divided by 4 equals 20 plus 4.

Hence, 20 plus 4 is the expression shows partial quotients of 96 divided by 4.

To learn more on Expression click:

brainly.com/question/14083225

#SPJ6

Answer:

In a sequence of 5 numbers, the 3rd number is the middle number. So in your problem the third number is the average of the 5 numbers -- which is the sum of the numbers, divided by how many there are: 505/5 = 101.

Explanation:

The 5 numbers will be: 97, 99, 101, 103 and 105

Let the 5 consecutive numbers be x-4, x-2, x, x+2 and x+4.

Now it is given that the sum of the 5 numbers is 505. This can be represented mathematically as follows:

[tex](x-4)+(x-2)+x+(x+2)+(x+4) = 505\\\\5x = 505\\\\x= 101[/tex]

So, x - 4 = 97

x - 2 = 99

x + 2 = 101

x + 4 = 103

Thus, the 5 numbers will be: 97, 99, 101, 103 and 105

Answer:

The mean is 0 and the deviation 1. And we can express this distribution with the following notation:

[tex] Z \sim N (\mu =0,\sigma =1)[/tex]

[tex]\sigma = 1[/tex] correct the deviation for this special distributionn is always 1

Step-by-step explanation:

The normal standard distribution is an special case of the normal distribution with some parameters on specific.

The mean is 0 and the deviation 1. And we can express this distribution with the following notation:

[tex] Z \sim N (\mu =0,\sigma =1)[/tex]

And when we analyze the options we can conclude this:

[tex]\mu[/tex] this value for this distribution is always equal to 0 and not 1

[tex]\sigma = 1[/tex] correct the deviation for this special distributionn is always 1

[tex]x[/tex] this value can be any value higher or lower than 1 so then is not the correct option

[tex]z[/tex] this variable can be different from 1 so then is not the correct option

Answer:

The mean is 0 and the deviation 1. And we can express this distribution with the following notation:

correct the deviation for this special distributionn is always 1

Step-by-step explanation:

The normal standard distribution is an special case of the normal distribution with some parameters on specific.

The mean is 0 and the deviation 1. And we can express this distribution with the following notation:

And when we analyze the options we can conclude this:

this value for this distribution is always equal to 0 and not 1

correct the deviation for this special distributionn is always 1

this value can be any value higher or lower than 1 so then is not the correct option

this variable can be different from 1 so then is not the correct option

Step-by-step explanation: