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Pavel [41]
2 years ago
12

If the radius of a circle is doubled, how does the area of the circle change?

Mathematics
1 answer:
makkiz [27]2 years ago
5 0

Answer:

Quadruple the size

Step-by-step explanation:

Explanation:

When you enlarge a linear measurement by a scale factor a the area changes by a scale factor a2

So when you double the radius. scale factor 2, the area is increased by a scale factor:

22=4

So the area is quadrupled in this case.

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Sandy drove 55 miles per hour to Orlando. Write a function rule that relates the number of miles traveled to the hours driven. ​
zloy xaker [14]

The function rule that relates the number of miles traveled to the hours driven is d = 55t

<h3>What is speed?</h3>

Speed is the ratio of distance traveled by a body to the time taken.

The formula for calculating distance is expressed as:

  • distance = speed * time

  • Speed s = d/t

Given that the speed is 55 miles per hour

55 = d/t

Cross multiply

d = 55t

Hence the function rule that relates the number of miles traveled to the hours driven is d = 55t

Learn more on speed function here: brainly.com/question/14101278

3 0
3 years ago
The table shows the values of a function f(x).
Inessa [10]

Answer:

-4

Step-by-step explanation:

The average rate of change of a function f(x) between two points x = a and x=b is given by,

f(x)=\frac{f(b)-f(a)}{b-a}

This can be understood with a simpler example, the straight line.

In this case, the rate of change of the 'function' is given by the slope,

m=\frac{f(x_{2})-f(x_{1})}{x_{2}-x_{1}};                

(x_{1},f(x_{1})),(x_{2},f(x_{2})) being two points on the straight line.

So, for the given problem,

a = -2

b = 2

Hence, average rate of change of f(x)=\frac{f(2)-f(-2)}{2-(-2)} =\frac{9-25}{2+2} =\frac{-16}{4} =-4

6 0
4 years ago
Read 2 more answers
Olivia helps paint a square mural in her classroom. Then she helps paint a mural in the hallway whose length is 5 feet longer an
attashe74 [19]
The square mural in Olivia's classroom has dimensions x by x.

Then she paints a mural of dimensions: x+5  (the length) by x-2  (the width).

Thus the second mural (the hallway mural) has the shape of a rectangle with dimensions (x+5) by (x-2), so the area of the second mural is
(x+5)(x-2).

<span>
each side of the classroom mural is 7 feet means that x = 7 ft, 
</span>
thus the area of the hallway mural is :
 (x+5)(x-2)=(7+5)(7-2)=12*5=60    (square feet)


Answer:
<span>C. (x + 5)(x – 2); 60 square feet</span>
5 0
3 years ago
What is the rate of change?
Mumz [18]

Answer:

150 I think.... I tried my best if it's wrong plz don't worry my frnd..

4 0
3 years ago
A spinner is divided into 11 equal sections numbered from 0 to 10. You spin the spinner once. What is P(even)
sasho [114]

Answer:

p(even)= \frac{6}{11}

Step-by-step explanation:

It's given in the question that;

The spinner is divided into 11 equal sections from 0 to 10.

You spin the spinner <u>ONCE!</u><u> </u>

The total number of possibilities is six, and the total number of sample spaces is 11.

So the probability of getting an even number is; p(even)= \frac{6}{11}

I hope this helps!  

4 0
2 years ago
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