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yKpoI14uk [10]
3 years ago
15

19) You want to solve the system below by eliminating y. You multiply the first equation by 7. By what number should you multipl

y the second equation? * 2x - 5y = 1 -3x + 7y = -3 -5 5 -7 7
i do not know
​
Mathematics
1 answer:
spin [16.1K]3 years ago
6 0

Answer:

Should be 7 because you want the equations to balanced.

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Hi :), im really struggling with this. Just wanted to know if anyone can explain step by step for me please. Id really appreciat
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Answer:

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Step-by-step explanation:

the formula for the surface area of a sphere (As) is

As = 4×pi×r²

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