the distance that a barge traveled downstream is proportional to the amount of time what is the constant of proportionality

You decide instead to take the train there. the train will take 135 minutes. convert this into hours and minutes.

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14