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3 years ago

15

Question 25 the sum of three numbers is 79 . the second number is 9 less than the first. the third number is 2 times the first.

what are the numbers?

1 answer:

g100num [7]3 years ago

4 0

I believe the numbers are 22, 13, and 44.

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Answer:

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Step-by-step explanation:

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$\left\{\begin{array}{l}4x+y=8\\6x-9y=12\end{array}\right..$

Fro mthe first equation

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Substitute into the second equation $8-4x$ instead of y:

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using the parabola formula:

y = a(x-h)² + k²

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y = y

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