Suppose a triangle has sides a, b, and c and let e be the angle opposite the side of length a. if cose < 0, what must be true?

The center of a circle represent by the equation (x+9)^2+(y-6)^2=10^2 (-9,6), (-6,9), (6,-9) ,(9,-6)

On saturday a souvenir shop had 125 customers.sixty four percent of the costumers paid with a credit card. how many costumers paid with cash?

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?