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If x and y vary directly and y is 72 when x is 9, find y when x is 10.

User Svaponi
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1 Answer

4 votes

Answer:

Explanation:

From y=72 when x=9 we get:


y=8x


\text{When }x=10,


y=8 * 10=80

Solution: When x=10, y=80.

User Justin Rowe
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