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ycow [4]
3 years ago
14

13 please help ‍♀️‍♀️‍♀️‍♀️

Mathematics
2 answers:
bija089 [108]3 years ago
5 0

2.5*(3+x);2.5x+7.5

7.5+2.5x

so 2.5x+7.5=2.5+7.5

Ganezh [65]3 years ago
3 0
7.5 + 2.5x ; 2.5x + 7.5
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4 0
3 years ago
I need help with this .
vaieri [72.5K]
I would be glad to help you! I will solve through 3 to get you started.

This is a very important concept, so it would be helpful if you learn it on your own.

C= 2* pi* r

1. The radius is 5 cm. 5 cm represents r in the equation.
C= 2* 3.14 (or pi)* 5 
Multiply it by using a calculator. 
My answer was 31.4.

Let's try the second one.
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C= 2*3.14*4.5
I got 28.26

One more. 
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35.17 was my answer.

Make sure to add the end signs to you answer, ft, cm, meter, etc.

Let me know if you need more help.

Brainliest answer is always appreciated.
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