A perfect cube<span> is a whole number which is the </span>cube<span> of another whole number. </span>In order to check whether a number is a perfect cube or not, we find its prime factors and group together triplets of the prime factors. If no<span> factor is left out then the number is a perfect cube.</span>
Answer:
a=3
Step-by-step explanation:
3x3=9
Is it 2 times x squared (2x^2?
2 * 6^2
2 * 36
72
The initial equation is:

Let's transform it for x:

... distract 5:

... divide both sides by 5:
Answer:
x = 2.564 ( to 3 dec. places )
Step-by-step explanation:
Using the rule of logarithms
log
⇔ n logx
Given
= 62 ( take the ln of both sides )
ln
= ln 62, that is
x ln5 = ln 62 ( divide both sides by ln 5 )
x =
≈ 2.564