karina7723
karina7723 karina7723
  • 26-06-2020
  • Mathematics
contestada

Which expression is a perfect cube?
12x12y18
O 12x27,125
O 64x15y18
64x27
27,125

Which expression is a perfect cube 12x12y18 O 12x27125 O 64x15y18 64x27 27125 class=

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Space
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  • 26-06-2020

Answer:

D: 64 x^27 y^125

Step-by-step explanation:

You can use either a calc or your knowledge of cube roots. I will be using knowledge.

You can automatically rule out a and b as if you take the cube root of 12, no whole number comes out. You are left with c and d. Option D is correct because the cube root of 64 is a whole number (4), the cube root of 27 is a whole number (3), and the cube root of 125 is also a whole number(5).

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