Find the sum of the first 10 terms for the following sequence: a = {-1, 2, 5, ... }

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false

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

Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction