7. Is a triangle with side lengths 9, 18, 7 a right triangle, an acute triangle, or
an obtuse triangle?

Ahigh definition tv cost $800 with a down payment of 2/5 of the cost. how much is left to pay, in dollars after the down payment has been made?

Asphere has a diameter of 10 in. what is the volume of the sphere?

Li buys supplies so he can make and sell key chains. he begins to make a profit only after he sells 4 key chains. what point on the graph makes the most sense in this situation?