Ihave no earthly idea how to do this

Kira looked through online census information to determine the overage number of people living in the homes in her city what is true about kira's data collection?

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

In triangle abc, angle c is a right angle. find the value of the trig function indicated. find tan a if c = 17 and a = 8