This is an angle whose measure is between 0 degrees and 90 degrees

If t17 = 3 (t5) in an arithmetic progression, find t1 in terms of d.

Ineed ! what is the connection between ratios, fractions, and percents? give an example with your answer.

Let x have probability generating function gx (s) and let un generating function u(s) of the sequence uo, u1, satisfies p(x > n). show that the (1- s)u(s) = 1 - gx(s), whenever the series defining these generating functions converge.