20 boys are trying out for 10 spots on the basketball team. if you wanted to determine how many different groups of 10 boys can be created, would you use a permutation or combination?

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?