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OpenStudy (anonymous):
Variable y varies directly with variable x, and y = 5 when x = 8. What is the value of x when y = 15?
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OpenStudy (anonymous):
@iGreen.
OpenStudy (thatonegirl_):
direct variation looks like y=kx. So when u plug everything in it is 5=k(8). k=5/8. Now that u have k, plug what u know into the same formula and solve for x.
OpenStudy (anonymous):
nvm i got this
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