Question

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

Answer 1

@Praja_01

Answer 2

@jim_thompson5910 Urgent help!

Answer 3

@iNeedTheHelp

Answer 4

y varies directly as the cube of x

means

y = kx^3

Answer 5

when x=0.5, y =2.5

y = kx^3

2.5 = k*(0.5)^3

Solve for k

Answer 6

Thanks a lot

Answer 7

np

Answer 8

@jim_thompson5910 k=2.5/0.025 < how to solve this without a calculator :D

Answer 9

@jim_thompson5910 I got 100,what next ?

Answer 10

@jim_thompson5910 ??

Answer 11

you should have gotten k = 20

Answer 12

I mean i got 20 what next

Answer 13

y = kx^3

y = 20x^3

540 = 20x^3

Solve for x