Answer:
x = 4
Step-by-step explanation:

Multiply both sides of the equation by 3
7 + 2x = 15
Subtract 7 from both sides of the equation
2x = 8
Divide both sides of the equation by 2
x = 4
Hope this helps :)
Answer:
B.
Step-by-step explanation:
if smart, they can hide
Answer:
B
Step-by-step explanation:
check using Pythagorean theorem
8^2 = 5^2 + 7^2
64 = 25 + 49
64 = 74
No