The sum of the speeds of two trains is 721.7 miles per hour. if the speed of the first train is 10.3 mph faster than that of the second train, find the speeds of each.

Steve is scuba diving near his home in maui. at one point he is 100 feet below the surface. represent this number with a negative number. if he descends another 5 feet, what negative number will represents his.

Find the quotient. 50a2 – 98b2 -5a +7b

What is the solution set of the quadratic inequality x^2-5< or equal to 0