Can you help me please?

Answer:

The average rate of speed of the model airplane, per second is 18 feet.

Step-by-step explanation:

Given:

It took the model airplane 5 seconds to go 90 feet.

Now, to find the average rate of speed in feet per second.

So, in 5 seconds the airplane go to = 90 feet.

In 1 second the airplane go to = 90 ÷ 5 feet.

Therefore, by dividing 90 feet by 5 seconds we get = 18 feet.

Thus, the average rate of speed of the model airplane, per second is 18 feet.

Answer:

5 hours  was Aaron at the sitter

Explanation:

Cost of baby sitting for the first hour: 10

Cost of baby sitting for additional hour= 12

Total cost of babysitting= 58

Since the cost of first hour is 10

Hence  the remaining cost after first hour

= 54-10

=48

Which means 1 hour  is consumed in the first hour

Now to calculate the remaining hours for every additional hour

= [tex]\frac{48}{12}[/tex]

=4 hours

Hence the total hour Aaron was with the sitter

= 1 hour + 4 hours

= 5 hours

Answer:6.7

Step-by-step explanation:5.2+6.3=11.5 then you do -12 divided by 2.5 and get -4.8 then you add the answers together but that won’t work because different signs subtract and you get positive 6.7

To evaluate the expression (5.2+6.3) - 12 ÷ 2.5, you first perform the division. Then, substitute the result and add the numbers inside the parentheses. Finally, subtract the result from the addition.

To evaluate the expression (5.2+6.3) - 12 ÷ 2.5, we start by performing the division. 12 ÷ 2.5 equals 4.8. Now, we substitute this result into the expression, so the expression becomes (5.2+6.3) - 4.8. Next, we add the numbers inside the parentheses together, giving us 11.5. Finally, we subtract 4.8 from 11.5, resulting in 6.7.

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Answer:

f(-1) = -6

f(0) = -5

f(1) = -4

f(2) = -3

f(5) = 0

f(8) = 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Algebra I

Step-by-step explanation:

Step 1: Define

Identify

[Function] f(x) = x - 5

f(-1) is x = -1 for function f(x)

f(0) is x = 0 for function f(x)

f(1) is x = 1 for function f(x)

f(2) is x = 2 for function f(x)

f(5) is x = 5 for function f(x)

f(8) is x = 8 for function f(x)

Step 2: Evaluate

f(-1)

f(0)

f(1)

f(2)

f(5)

f(8)

Answer:

Yes,two planes descending at the same angle

Explanation:

Given the angle of deviation as seen by the pilot is equal to 15 degrees,

i.e the angle made by the line of sight with the ground is 15 degrees also the angle of elevation from a person at ground to the other plane is given to be equal to 15 degrees

which means the angle made by line of sight to plane and ground is equal to 15 degrees hence both of these situations refer to the same angle at a point and hence both planes are descending at the same angle.

Answer:

D

Step-by-step explanation:

To calculate the total number of homes in Lora's community, the number of flyers distributed (630) is divided by the percentage of homes that received flyers (35%), resulting in a total of 1800 homes.

To find the total number of homes in Lora's community, we need to set up a proportion where the number of flyers delivered represents 35% of all homes. Since Lora distributed flyers to 630, that is 35% of the total homes. Using the percentage formula:

Total Homes = Distributed Flyers / Percentage of Homes

So, in this case, it would be:

Total Homes = 630 / 0.35

Dividing 630 homes by 0.35 (35% as a decimal) gives us:

Total Homes = 1800

Therefore, there are 1800 homes in Lora's community.

Answer:

The equation of the hyperbola in standard form is [tex]\frac{(x - 4)^2 }{ 9} - \frac{(y +2)^2}{2.25} = 1[/tex]

Step-by-step explanation:

Given:

Centre of the hyperbola=(−2,4)

one vertex of the hyperbola= (−2,7) .

slope of the asymptote = 12

To Find:

The equation of the hyperbola in standard form=?

Solution:

W know that the  standard form of hyper bola is

[tex]\frac{(x - h)^2 }{ a^2} - \frac{(y - k)^2}{  b^2} = 1[/tex]............................(1)

where

(h,k) is the centre

(x,y) is the vertex of the parabola

a is the length between the centre and the vertices of the hyperbola

b is  the distance perpendicular to the transverse axis from the vertex to the asymptotic line

Now the length of a is given by

a=|k-y|

a=|4-7|

a=|-3|

a=3

Also we know that,

Slope =[tex]\frac{a}{b}[/tex]= 2

=>[tex]\frac{3}{b}=2[/tex]

=>[tex]\frac{3}{2}=b[/tex]

=>b=1.5

Now substituting the known values in equation(1)

[tex]\frac{(x - 4)^2 }{ 3^2} - \frac{(y - (-2)^2}{  1.5^2} = 1[/tex]

[tex]\frac{(x - 4)^2 }{ 9} - \frac{(y +2)^2}{2.25} = 1[/tex]

Answer:

[tex]\frac{(x+2)^{2}}{1296} - \frac{(y-4)^{2}}{9} = 1[/tex]

Step-by-step explanation:

The standard form of a hyperbola centered at a point distinct from origin has the following form:

[tex]\frac{(x-h)^{2}}{a^{2}} - \frac{(y-k)^{2}}{b^{2}} = 1[/tex]

The distance between the center and the vertex is:

[tex]b = \sqrt{[(-2)-(-2)]^{2}+(7-4)^{2}}[/tex]

[tex]b = 3[/tex]

The value of the other semiaxis is:

[tex]\frac{a}{b} = 12[/tex]

[tex]a = 12\cdot b[/tex]

[tex]a = 36[/tex]

The standard equation of the hyperbola is:

[tex]\frac{(x+2)^{2}}{1296} - \frac{(y-4)^{2}}{9} = 1[/tex]

Answer:

The graph of g(x) = –2 · 10x is stretched vertically and reflected across the x-axis.

Step-by-step explanation:

Answer:

D. The graph of g(x) = –2 · 10x is stretched vertically and reflected across the x-axis.

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

20% is 20 out of 100

and that's how you find out how much of a tip you should leave.

The proportion that would BEST represent how to find how much tip she should leave is x/15 = 20/100

Let the amount of tip h left be expressed as x

Given the following parameters

To find the amount of tip Jennifer dropped;

Price of tip = 20% of 15

x = 20/100 * 15

x/15 = 20/100

Hence the proportion that would BEST represent how to find how much tip she should leave is x/15 = 20/100

Learn more on proportions here: https://brainly.com/question/18437927

Answer:

23 quarters and 12 dimes

Step-by-step explanation:

Answer:

7.88

Step-by-step explanation:

Answer: 7,88

Explanation

The inverse is: {(3,5), (4,-2), (-2,7)}

Step-by-step explanation:

In the inverse of a function, the output becomes input and the input becomes output i.e. the functions is reversed.

Given function is:

[(5,3) (-2,4) (7,-2)]

The order of elements in ordered pairs will be reversed. The second elements will be on first place and first element will be on second place.

So,

The inverse is: {(3,5), (4,-2), (-2,7)}

Keywords: Functions, inverse

Learn more about functions at:

#LearnwithBrainly

The inverse of the given function (5,3), (-2,4), (7,-2) is (3,5), (4,-2), (-2,7).

The inverse of a function is created by swapping each input-output pair.

For the given function with ordered pairs (5,3), (-2,4), and (7,-2), we can find the inverse by switching each pair's coordinates. This yields the inverse ordered pairs (3,5), (4,-2), (-2,7). Remember that the inverse function only exists if the original function is bijective, meaning each output is paired with exactly one input.

Answer:

17 × 12 = 204 teddy bears

Step-by-step explanation:

17 cases, 12 bears in each case

Answer: A. g+2g =352

Step-by-step explanation:

Let points : g

If molly has half of George then let

Let molly : 1

Let George: 2

Therefore g*1 =g

And g*2 = 2g

So, g+2g = 352

Answer:

About 158 students in the district participate in the school music program.

Step-by-step explanation:

394(2/5)=788/5=157.6

Answer:

2114.7 people per square mile

Step-by-step explanation:

Population density can be calculated by dividing the total number of people by the area.

23,896 people ÷ 11.3 square miles

≈ 2114.7 people per square mile    (rounded number)

Your answer is one decimal place off.

Answer:

26

Step-by-step explanation:

Answer: 26

Step-by-step explanation:

Final answer:

The slope of the line passing through (0, 5) and (-12, 2) is calculated using the slope formula and is found to be 1/4.

Explanation:

The slope of the line passing through the points (0, 5) and (-12, 2) can be calculated using the formula slope (m) = (rise)/(run), where 'rise' is the change in the y-values and 'run' is the change in the x-values. To find the slope, we subtract the y-value of the second point from the y-value of the first point and divide by the subtraction of the x-value of the second point from the x-value of the first point: m = (5 - 2) / (0 - (-12)) = 3 / 12 = 1/4. Therefore, the slope of the line is 1/4.

Answer:

The values are x = 0° or x = 60°

Step-by-step explanation:

Given:

[tex]\cos x + \frac{1}{\sqrt{3} }\times \sin x = 1[/tex]

Let it be in the form of

[tex]a\cos x + b\sin x = 1[/tex] such that

a = 1

[tex]b=\frac{1}{\sqrt{3} }[/tex]

We have

[tex]\sqrt{(a^{2}+b^{2} )}=\sqrt{(1^{2}+(\frac{1}{\sqrt{3} }) ^{2} )}\\=\sqrt{\frac{4}{3}}\\=\frac{2}{\sqrt{3} }[/tex]

Now, Dividing both the side by [tex]\frac{2}{\sqrt{3} }[/tex] we get

[tex]\frac{\sqrt{3} }{2}\cos x + \frac{1}{2}\sin x =\frac{\sqrt{3} }{2}\\[/tex]

We Know

[tex]\sin 60 =\frac{\sqrt{3} }{2}\\and\\\cos 60 = \frac{1}{2}[/tex]

Now by replacing with above values we get

[tex]\sin 60\times \cos x + \cos 60\times \sin x = \frac{\sqrt{3} }{2}\\[/tex]

Also we have formula

[tex]\sin A\times \cos B + \cos A\times \sin B = \sin (A+B)[/tex]

By applying the above Formula we get

[tex]\sin (60+x)=\frac{\sqrt{3} }{2}\\[/tex]

Also ,

[tex]\sin (60)=\frac{\sqrt{3} }{2}\\and\\\sin (120)=\frac{\sqrt{3} }{2}[/tex]

Comparing we get

 60 + x = 60   or  60 + x = 120

∴ x = 0°               ∴ x = 120 - 60 = 60°    

Therefore, the values are x = 0° or x = 60° i.e between 0° to 360°

Answer:

Step-by-step explanation:

a(c + b) = d          // We multiply a by c and b (addition is distributive)

ac  +  ab = d        // We let the c addend in the left

ac = d - ab          // We divide by a

c = (d - ab) / a

Answer: Hi Hi I know this is like a year late but I would like to be able to help future people with this question.

The correct answer is: c=d+ab/a (B)

Isolate the variable by dividing each side by factors that don't contain the variable.

I really hope this helps people, have a happy halloween :D

Answer:

2

Step-by-step explanation:

The mean absolute deviation is a measure of variation in a dataset, not its center. It helps indicates how spread out the data is from the mean value.

The mean absolute deviation is not a measure of center,instead, it is a measure of variation. The center of a data set is typically represented by measures like the mean, median, or mode. These describe the common, central value in the dataset.

Conversely, the mean absolute deviation is a statistical tool used for understanding the dispersion or variation in a set of values. It gives an average of the absolute differences between each data point and the mean of the data set. This helps identify how spread out the data is from the mean.

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Answer:

The cabinet is longer by 1/12 foot.

Step-by-step explanation:

3/4 x 3/3 = 9/12

2/3 x 4/4 = 8/12

Answer:

p=11 packets were purchased

Step-by-step explanation:

30+11p=151

11p=121

then

121/11

so

p=11

Hope I understood the question :/

Answer:

Step-by-step explanation:

I believe the correct answer is that Andrew's Math Teacher purchased 11 packets of 10 tests each, meaning that the total number of test would be 110. I got this by subtracting the $30 entrance fee from the $151. After doing this we are left with $121. I then divided the $121 by the cost per packet and I was left with 11 packets. Since every packet contains 10 tests I multiplied that by the number of packets to get the final answer... 110 tests purchased.

Answer:

The numbers are 23 and 24

Step-by-step explanation:

Let

x ----> the first positive consecutive integer

x+1 ----> the second positive consecutive integer

we know that

The product of the two consecutive positive integers is 552

so

The algebraic expression that represent this situation is

[tex]x(x+1)=552[/tex]

Convert to expanded form

[tex]x^2+x-552=0[/tex]

Solve the quadratic equation by graphing

The roots of the equation are

[tex]x_1=-24[/tex] ----> the number cannot be negative

[tex]x_2=23[/tex]

see the attached figure

therefore

[tex]x=23\\x+1=24[/tex]

The numbers are 23 and 24

To find two consecutive positive integers whose product is 552, set up the equation x(x + 1) = 552, expand and solve the quadratic equation.

To find two consecutive positive integers whose product is 552, we can set up the equation x(x + 1) = 552, where x represents the smaller integer.

Expanding the equation, we get x^2 + x - 552 = 0. This is a quadratic equation, and we can solve it by factoring or using the quadratic formula.

Factoring the quadratic equation, we find that (x - 23)(x + 24) = 0. So the two consecutive positive integers are 23 and 24.

Answer:

D. Subtraction property of equality; n = 15

Step-by-step explanation:

Given equation that shows the cost of n basketballs uniforms,

C = 40n + 260

According to the question,

Total cost = $ 860,

⇒ 40n + 260 = 860

Using subtraction property of equality, subtract 260 on both sides,

⇒ 40n = 860 - 260

⇒ 40n = 600

Using division property of equality, divide both sides by 40.

⇒ n = [tex]\frac{600}{40}[/tex] = 15.

Hence, 15 uniforms were purchased.

i.e. Option D is correct.

Answer:

120 gallons per hour.

Step-by-step explanation:

Between 1:30 P.M. and 1:50 P.M., 40 gallons of water leaked into a boat.

We know, the (1: 50 P.M. - 1: 30 P.M.) = 20 minutes.

So, the time span is of 20 minutes and the amount of water leaked into is 40 gallons.

Therefore, the amount of water that will leak into the boat in 60 minutes is [tex]\frac{40 \times 60}{20} = 120[/tex] gallons.

So, the rate in gallons per hour of the leaking water is 120 gallons per hour. (Answer)