In the figure below, Y is between X and Z
and XZ = 40

Please help ASAP!!!

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

Me. i can't figure out this question. give an explanation too. .

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document