Answer:
The value of 8m is 2
Step-by-step explanation:
step 1
Find the value of m
we know that
[tex]m^{-3} =64[/tex]
so
[tex]\frac{1}{m^{3}}=64\\ \\m^{3}=\frac{1}{64}\\ \\ m=\frac{1}{\sqrt[3]{64}}\\ \\m=\frac{1}{4}[/tex]
step 2
Find the value of 8m
[tex]8m=8(\frac{1}{4})=2[/tex]