What is the degree of the polynomial 5g^2+2gh-h^2+7

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0

Calculate the missing value. round the answer to on decimal place. start with 70, increase it by 21%, and end up with