What’s the answer 5x6 x 1

If x = 12 and y = 3, what is the value of x - y 2? 81 6 3 18

What is the size of the matrix resulting from

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)?