Question

For which of these values of m is 0.8 × 10^m a perfect cube?
a.9
b.8
c.7
d.6

please full explanation ​

Answer 1

Answer:

c,7

Step-by-step explanation:

0.8x10^m

8x10^(m-1)

2³x10^(m-1)

to become a perfect cube, m-1 should be divisible by 3

so m-1=3,6,9,12...

m=4,7,10,13...

hence 7.