Lisandro swims for 2 hours in a stream that has a current of 4 mph. He leaves his dock and swims upstream for 3 miles and then back to his dock. What is his swimming speed in still water?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

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

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin