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OpenStudy (anonymous):
If w varies directly as 2x - 1, and w = 9 when x = 2, find x when w = 15.
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OpenStudy (anonymous):
jk im an idiot x = 3 doesn't it.
OpenStudy (kropot72):
You are correct.
OpenStudy (anonymous):
So then. wait. @kropot72 what is x when w is 15...
OpenStudy (kropot72):
w = k(2x - 1) where k is a constant of proportionality. 9 = k(4 - 1) = 3k k = 3 w = 3(2x - 1) 15 = 3(2x - 1)..............(1) Just solve equation (1) to find the value of x when w = 15
OpenStudy (anonymous):
@kropot72 you're actually perfect and I love you
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OpenStudy (kropot72):
You're welcome :)
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