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
Question
Asked 4/28/2015 8:49:47 AM
Updated 4/28/2015 9:07:53 AM
This conversation has been flagged as incorrect.
Flagged by yeswey [4/28/2015 9:07:53 AM]
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Original conversation
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, y is 20 when x is 10.

5/2.5 = y/10

2.5y = 50

y = 50/2.5

y = 20

Question
Asked 4/28/2015 8:49:47 AM
Updated 4/28/2015 9:07:53 AM
This conversation has been flagged as incorrect.
Flagged by yeswey [4/28/2015 9:07:53 AM]
Rating
8
If y is 2.5 when x is 5 and y varies directly with x,
the equation is y = kx where k is the constant,
with given condition we get k = y/x = 2.5/5 = 1/2
the equation is y = 1/2x
when x = 10, y = 1/2*10 = 5
Added 4/28/2015 9:07:48 AM
This answer has been confirmed as correct and helpful.
Confirmed by jeifunk [4/28/2015 9:08:49 AM]

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