Find the sum of the complex numbers.
(3 + 3i) + (8 + 7i)

Given abcd ac=38 and ae=3x+4 find the value of x

Ihave trouble finding the nth term of a linear sequence

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)?