<h3>
Answer: 116.2°</h3>
Work Shown:

The first equation is one of the three variations for the Law of Cosines.
Make sure your calculator is in degree mode.
1 foot = 12 inches
56 inches / 12 inches = 4.66 feet = 4 feet and 8 inches
Answer:
g(2y) = 8y^2 -3
Step-by-step explanation:
g(x)=2 x^2 -3
Let x=2y
g(2y) = 2 (2y)^2 -3
= 2 (4y^2) -3
= 8y^2 -3
The answer is x=-7 you just have to cancel the like factors out n you don’t have to divide nothing in this equation.