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andreyandreev [35.5K]
3 years ago
7

What is the circumference of the circle? r=6.4

Mathematics
1 answer:
nignag [31]3 years ago
8 0

Answer:

C = 40.2124

Step-by-step explanation:

The formula for circumference is

C = 2*pi*r

where r is the radius.

Substitute what we know.

C = 2 * pi * 6.4

C = 12.8 * pi

If we use substitute pi in, we get

C = 40.2124

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The following is a model showing the solution to an equation. x - 34 = 13 x - 34 + 34 = 13 + 34 x = 47 What property of equality
yanalaym [24]

Answer:

B.) Addition*Additive property of equality

Step-by-step explanation:

You add 34 to both sides of the equation to find what x was equal to

Hope I helped

8 0
3 years ago
Use powers to rewrite these problems: Example: 5 x 5 = 52
jeyben [28]

Answer:

<u>Problem A</u>

5 * 5 * x * x * x

5^2*x^3

<u>Problem B</u>

8 * 8 * 8

8^3

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5 0
3 years ago
Q7.
VLD [36.1K]

Answer:

10

Step-by-step explanation:

Let c = sum of ages of all children.

mean age of all children = c/15 = 7

c = 15 * 7 = 105

The sum of the ages of all children is 105.

Let b = sum of ages of the 9 boys.

mean age of boys = b/9 = 5

b = 9 * 5 = 45

The sum of the ages of the boys is 45.

The sum of the ages of the girls is c - b.

c - b = 105 - 45 = 60

The number of girls is 15 - 9 = 6

mean age of girls = (sum of ages of the girls)/(number of girls) =

= 60/6 = 10

3 0
3 years ago
What value should be added to the expression to create a perfect square?
Lilit [14]
Answer is D.Don't take out the square

8 0
3 years ago
HELP FAST PLS!What value of x makes the equation true? 36/63 = x/7<br> A. 2 B. 3 C. 4 D. 6
taurus [48]
The answer is 4.

36/63 = 0.57
4/7 = 0.57
6 0
3 years ago
Read 2 more answers
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