Someone please help??

Answer:
[tex]\sqrt[3]{-0.064}=-0.4[/tex]
Step-by-step explanation:
An on-line calculator can do this if your own doesn't.
For a cube root, you may have to use the exponentiation function with an exponent of 1/3. Usually, that fraction will need to be put in parentheses. (See the second attachment for the result from a TI-84 calculator.)