That would be (126 - 120) / 120 = 5/120 = 5%
Its b
Answer:
The length of the third side of the triangle is 
Step-by-step explanation:
Let
c ----> the length of the third side of the triangle
we know that
Applying the law of cosines

we have

substitute the given values



Move all terms that don't contain x to the right side and solve.
x = -7y/10 + 718/5
Answer:
77.77 or 78%
Step-by-step explanation:
She got 35/45 so
35 divided by 45 is 0.777777778
0.777777778 x 100 = 77.7777778
77.77% or 78%