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hba
 4 years ago
y varies directly as the cube of x. when x=0.5, y =2.5.if y=540 then x equals.
hba
 4 years ago
y varies directly as the cube of x. when x=0.5, y =2.5.if y=540 then x equals.

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hba
 4 years ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 Urgent help!

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1y varies directly as the cube of x means y = kx^3

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1when x=0.5, y =2.5 y = kx^3 2.5 = k*(0.5)^3 Solve for k

hba
 4 years ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 k=2.5/0.025 < how to solve this without a calculator :D

hba
 4 years ago
Best ResponseYou've already chosen the best response.0@jim_thompson5910 I got 100,what next ?

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1you should have gotten k = 20

jim_thompson5910
 4 years ago
Best ResponseYou've already chosen the best response.1y = kx^3 y = 20x^3 540 = 20x^3 Solve for x
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