What is the value of x

78
53
42
72

:24% of students in a class are girls. if there are less than 30 students in this class, how many students are there? how many girls are there?

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

Eric drove 275 miles in 5 hours. at the same rate how long would it take him to drive 495 miles?