Question

The product of my number and twice my number is 128 what is half my number

Answer 1

Let's call your number n. Twice your number is 2n. The product of your number and twice your number (so n multiplied by 2n) is 128.

Set up an equation:

n × 2n = 128

2n² = 128

Divide both sides by 2:

n² = 64

Square root both sides to isolate n:

n = 8

The question asks for half your number, so just half 8:

8 ÷ 2 = 4.

Half your number is 4.