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y varies directly as the cube of x. when x=0.5, y =2.5.if y=540 then x equals.
 one year ago
 one year ago
y varies directly as the cube of x. when x=0.5, y =2.5.if y=540 then x equals.
 one year ago
 one year ago

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hbaBest ResponseYou've already chosen the best response.0
@jim_thompson5910 Urgent help!
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
y varies directly as the cube of x means y = kx^3
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
when x=0.5, y =2.5 y = kx^3 2.5 = k*(0.5)^3 Solve for k
 one year ago

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

hbaBest ResponseYou've already chosen the best response.0
@jim_thompson5910 I got 100,what next ?
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
you should have gotten k = 20
 one year ago

jim_thompson5910Best ResponseYou've already chosen the best response.1
y = kx^3 y = 20x^3 540 = 20x^3 Solve for x
 one year ago
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