Write three different improper fractions that equal 4 1/2

Solve the system of equations. y= 2x y= x^2 - 15

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)?

Ineed no it anyone can see this