Which number is a perfect cube? 9 18 27 36

27 is the perfect cube in your list

Hi!

A number that has a perfect cube is a number that can be solved like this

x³ = n

Let's test all these numbers.

9

Does 9 have a perfect cube? Let's factorize it to find out.

9/3 = 3

3/3 = 1

3 * 3 is 9's factorization. That is not a perfect cube.

18

Do the same thing.

18/2 = 9

9/3 = 3

3/3 = 1

2 * 3 * 3 is 18's factorization. It is not a perfect cube.

27

27/3 = 9

9/3 = 3

3/3 = 1

3 * 3 * 3 is 27's factorization. It is a perfect cube!

3³ = 27

Hope this helps! :)

-Peredhel

set each factor equal to 0

4x-3 = 0

2x-1 = 0

solve for x.

4x-3=0

4x=3

x= 3/4

solve for x. 

2x-1= 0

2x= 1

x= 1/2

eventually after a few more steps, your answer should be 1/2 is less than or equal to x and 3/4 is greater than or equal to x