A chemical company makes two brands of antifreeze the first brand is 70% pure antifreeze and the second brand is 95% pure antifreeze. In order to obtain 80 gallons of a moxture that contains 85% pure antifreeze, how many gallons of each brand of antifreeze must be used

Which statement justifies why angle ebc measures 90?

Bernice paid $162 in interest on a loan of $1800 borrowed at 6%. how long did it take her to pay the loan off?

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