Shaun collects coins. he has 21 quarters and 28 pennies in a jar. what is the ratio of quarters to pennies in the jar?

Use the net as an aid to compute the surface area of the triangular prism. a) 550 m2 b) 614 m2 c) 670 m2 d) 790 m2

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

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.