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goblinko [34]
3 years ago
12

Help me with this homework plz.

Mathematics
2 answers:
sleet_krkn [62]3 years ago
8 0
The 9 is 624 square millimeters
andrezito [222]3 years ago
7 0
A=pi times r•r
A=pi (9•9)
A=254.47
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A nickel is equal to 5 cents or 0.05 dollars.

A quarter is equal to 25 cents or 0.25 dollars.

Let number of nickels be = n

Let number of quarters be = q

0.05n+0.25q=2.85    ...........(1)

As it is given, there are 3 more nickels than quarters so equation becomes,

n=q+3   ................(2)

Plug in the value of 'n' from (2) in (1)

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