Arianna has $0.90 worth of nickels and dimes. She has 4 times as many nickels as dimes. By following the steps below, determine the number of nickels, x, and the
number of dimes, y, that Arianna has.

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

Solve for x where 0 equation: cot^2x+2cotx+1=0

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?