Suppose the sum \[ \sum_{k = 0}^{49} ( - 1)^k \binom{99}{2k}, \] where \binom{n}{j} = \frac {n! }{j! (n - j)! }, is written in the form a^b, where a and b are integers and b is as large as possible. find a+b.

Isee the amount was $90.00 then reduced to $75.00 , what is the percent ?

If myesha works overtime, she gets paid "time and a half" for every hour she works. in other words, for every hour over 40 hours myesha works each week, she gets her hourly pay plus half her hourly pay. what is myesha's pay per hour when she works overtime?

Asequence has its first term equal to 4, and each term of the sequence is obtained by adding 2 to the previous term. if f(n) represents the nth term of the sequence, which of the following recursive functions best defines this sequence? (1 point) f(1) = 2 and f(n) = f(n − 1) + 4; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2n; n > 1 f(1) = 2 and f(n) = f(n − 1) + 4n; n > 1 f(1) = 4 and f(n) = f(n − 1) + 2; n > 1 i will award !