Answer:
Step-by-step explanation:
Solution,
The perimeter of a triangle=Sum of all sides

Hope it will help you a lot.
Mistake in Line 2 : Was in the determining the values for a ,b,c
Mistake in Line 4 : Not taking the square roots of both sides.
Step-by-step explanation:

First Mistake : Line 2

Second Mistake : Line 4

Correct Solution :


The answer is 120 degrees on edgenutiy<span />
Answer:
4/8
Step-by-step explanation:
Because there was 7/8 of a pizza so you have to subtract the numerators 7 take away 3 and you dont change the demominter which comes out to 4/8
Answer:
56 degrees if I am not mistaken
Step-by-step explanation: