evaluate (3/4) -3 ??? ASAP

0

1388

2

evaluate (3/4)^{-3 ???}

^{can you also show workings out please. i know you have to make it 1/(3/4) to the power of 3, i just dont know how to go from here..?}

Guest Sep 23, 2015

edited by Guest Sep 23, 2015

0 users composing answers..

Best Answer

+130516

+5

Remember that a^-n = 1 / aⁿ ..... so we have ......

(3 / 4)^-3 = 1 / (3 / 4)³ = 1 / ( 27 / 64) = [1 / 1] / [ 27 / 64] =

[1 / 1 ] * [ 64 / 27 ] =

64 / 27

Notice another shortcut to our answer, here

(a / b)^-n = (b /a)ⁿ ......so.....

(3 / 4)^-3 = (4 /3)³ = 64 / 27

CPhill Sep 23, 2015

edited by CPhill Sep 23, 2015
edited by CPhill Sep 23, 2015

2⁺⁰ Answers

+7

evaluate (3/4)^-3 ???=64/27=2 10/27

Guest Sep 23, 2015

+130516

+5

Best Answer

Remember that a^-n = 1 / aⁿ ..... so we have ......

(3 / 4)^-3 = 1 / (3 / 4)³ = 1 / ( 27 / 64) = [1 / 1] / [ 27 / 64] =

[1 / 1 ] * [ 64 / 27 ] =

64 / 27

Notice another shortcut to our answer, here

(a / b)^-n = (b /a)ⁿ ......so.....

(3 / 4)^-3 = (4 /3)³ = 64 / 27

CPhill Sep 23, 2015

edited by CPhill Sep 23, 2015
edited by CPhill Sep 23, 2015

0 Online Users