Let's divide : -13xy²÷2y²

Marcus needs to rewrite f(x) = x2 + 6x + 4 in vertex form.

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)?

Olga bought a new skirt that cost $20. sales tax is 5%. how much did olga pay, including sales tax? 7.