Which expression is equivalent to the following? (5×10−3)+(6×10−3)2.2×104

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?

Simplify the expression. -2/5(10+15m-20n)