Mateo travels 60 mi to an island and 60 mi back again. However, during the trip back, the boat lost one of the engines and his trip back was 5 mph slower than on his way out. If the total trip took Mark 7 hrs, find the speed going to the island and coming back from the island.

5(-9w) put expression in distributive property

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0