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3 years ago

10x - 9y = -7 y = 3 need to find x

Mathematics

2 answers:

Elena-2011 [213]3 years ago

6 0

10x-9(3)=-7
10x-27=-7
10x=20
x=2

weeeeeb [17]3 years ago

4 0

The answer is 7 because 7 times 10 is seventy and 9times 7 is 63 and 70-63 is seven so x=7

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3 years ago

What is the answer to this question?

krok68 [10]

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$\boxed{\pink{\sf Option \ (1) \ is \ correct . }}$

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Now , next we need to solve for y .

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Now , replace y for $f^{-1}(x)$

$\underline{\boxed{\orange{\tt \implies f^{-1}(x) = \pm\sqrt{\dfrac{x-10}{5}}}}}$

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3 years ago

10x - 9y = -7 y = 3​ need to find x

10x - 9y = -7 y = 3 need to find x