Factor the expression y4 − 81 using the polynomial identity (x2 − y2) = (x − y)(x + y).

To prove "p is equal to q" using an indirect proof, what would your starting assumption be?

Amonument at a park is in the shape of a right square pyramid. a diagram of the pyramid and its net are shown. what is the surface area of the monument? enter the answer in the box. m²

Cody started biking to the park traveling 15 mph, after some time the bike got a flat so cody walked the rest of the way, traveling 4 mph. if the total trip to the park took 6 hours and it was 46 miles away, how long did cody travel at each speed? solve using rate times time= distance