Evaluate the expression when m=4 and n=9 5m-n

1 answer:

6 0

5m-n
Just replace m with 4 and n with 9
5(4)-9=20-9=11

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Irina18 [472]

Answer:

circumference= $\pi$ D

19.5=3.14*D

<u>19.5</u> =6

3.14

D=6

Radius=3

area= $\pi$ r²

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area=28 inches

Step-by-step explanation:

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