Question

Question #0ff05

Answer 1

`8" and " 13" inches"`

Explanation:

If we let x, be the length of the second part, then.

the length of the first part is x + 5

The 2 parts must total to 21

`rArrx+5+x=21rArr2x+5=21`

subtract 5 from both sides of the equation.

`2xcancel(+5)cancel(-5)=21-5`

`rArr2x=16`

To solve for x, divide both sides by 2

`(cancel(2) x)/cancel(2)=16/2`

`rArrx=8`

`rArr"first part " =x+5=8+5=13" inches"`

`"and second part " =x=8" inches"`