Please help, have a couple left!

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solve 125=(x^3)/ 1/3 ^-3

a. 7
b. 14
c. 15
d. 9

  • Please help, have a couple left! -

    since 125 = 5^3,
    1/3^-3 = 3^3

    5^3 = x^3/(3^3)
    5^3 = (x/3)^3
    now take cube roots:
    5 = x/3
    x = 15

  • Please help, have a couple left! -

    thankyou, thanks for showing work too. it helps me a lot too understand it.

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