Question

5. If x=y=2z and xyz=256 then what is the value of x?

Answer 1

Answer: 8

Step-by-step explanation:

xyz = 256, x=2z=y

256 = 2z x 2z x z[substituting x and y for 2z]

256 = 4z^3

z^3 = 256/4

z^3 = 64

z = 4

x = 2 x 4 = 8