Kat has 19 coins, all quarters and dimes, that are worth a total of $4. the system of equations that can be used to find the number of quarters, q, and the number of dimes, d, she has is shown. q + d = 19 0.25q + 0.1d = 4 how many quarters does she have? 4 5 14 15

What is the length and width of a 84.5 square foot rug? will mark

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.