Answer: the second fifth and sixth one
Step-by-step explanation:
Answer:

B. 30
Step-by-step explanation:
First, you multiply by 5 from both sides of equation.

Simplify, to find the answer.

, which is our answer.
Answer:
They both factored it correctly
Step-by-step explanation:
To find the one that was factored correctly, we expand the two of them and compare with
.
Fernando

= 
= 
Salma

= 
= 
As we can see, they both factored it correctly.
6.23 is the answer you get that by square root 40