Nine out of 20 teens said they eat breakfast every morning. what is a reasonable prediction for the number of teens out of 280 who eat breakfast every morning?

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

Find the distance between c and d on the number line c=3 and d=11

Determine the area of a triangle with (see picture below)