Which expression is a SUM? es) A) 5(2 + 3) B) 8 x (6 + 3) C) 5(2) +206 + 3) D) (5 + 2) = (2+3)​

Can someone me do math because i am having a breakdown rn because i don’t get it

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)?

Secant be and cf intersect at point d inside a what is the measure of cde