Expand and combine like terms.
(5 – 2x4)(5 + 2x4) =

Aschool had an election where the candidates received votes in the ratio 1: 2: 3. if the winning candidate received 210 votes, how many total people voted in the election?

What is the geometric mean of 3 and 7? a) square root of 21 b) 2 square root of 6 c) 2 square root of 7 d) 21

What is the angle measure, or angle of depression, between this bird and the bird watcher?