Simplify: 9^0. I’m a bit confused so can somebody please help me? (:

Acoin is tossed twice. let e e be the event "the first toss shows heads" and f f the event "the second toss shows heads". (a) are the events e e and f f independent? input yes or no here: yes (b) find the probability of showing heads on both toss. input your answer here: preview

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Present age of man is 45 years, 5 years back his age was 4 times age of his son what is present age of his son?