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kondor19780726 [428]
3 years ago
11

Help plz so I don't get phone taken

Mathematics
1 answer:
Ilia_Sergeevich [38]3 years ago
6 0

1) d/r = t

2) P/3 = s

3) 8.2cm

4) C/2pi = r

5) P/3r = q

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a_sh-v [17]

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2

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3 years ago
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ziro4ka [17]
ANSWER

D. (-2,5)


EXPLANATION

The given equations are

8x + 5y = 9...(1)

and

y = x + 7...(2)


We substitute equation (2) into equation (1) to get,

8x + 5(x + 7) = 9


We expand the bracket to get,


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