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If y is 2.5 when x is 5 and y varies directly with x, find y when x is 10. 5 7.5 12.5 20
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Asked 4/11/2014 1:10:24 PM
Updated 4/13/2014 9:55:08 PM
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User: If y is 2.5 when x is 5 and y varies directly with x, find y when x is 10. 5 7.5 12.5 20

Weegy: If y is 5 when x is 2.5 and y varies directly with x. When x = 10, y = ? 5/2.5 = y/10; y = 50/2.5; y = 20;
erikalui|Points 713|

Question
Asked 4/11/2014 1:10:24 PM
Updated 4/13/2014 9:55:08 PM
1 Answer/Comment
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y varies directly with x, then y = kx
y is 2.5 when x is 5, k = y/x = 2.5/5 = 0.5
The equation is y = 0.5x
when x = 10,
y = 0.5(10) = 5
Added 4/13/2014 9:55:08 PM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/13/2014 10:01:06 PM]
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