Current circut is 2-j5 and the resistance is 1+j3ohms, what is the voltage

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5

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)?

What is the result of adding the system of equations? 2x+y=4 3x-y=6