What pair of numbers multiplied to -8 and adds to -7?

In the diagram, the ratio of ab to ae is (1/2) . what is the ratio of the length of to the length of ?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

10 ! a train starts from grand city and travels toward belleville 388 miles away. at the same time, a train starts from belleville and runs at the rate of 47 miles per hour toward grand city. they pass each other 4 hours later. find the rate of the train from grand city.