select the angle that correctly completes the law of cosines for this triangle. 12^2 + 13^2 - 2(12)(13) cos __ = 5^2

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Do more republicans (group a) than democrats (group b) favor a bill to make it easier for someone to own a firearm? two hundred republicans and two hundred democrats were asked if they favored a bill that made it easier for someone to own a firearm. how would we write the alternative hypothesis?