Share 55 into the ratio 5:2

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Find the volume of the solid obtained by rotating the region enclosed by the curves y=1x and y=7^-x about the x-axis. (use symbolic notation and fractions where needed.) volume =