Everyday for 60 days, there is a 25% chance of rain. a) Find the probability that it will rain exactly 50 days. b) Find the expected value and variance of the number of rainy days. c) Approximate the probability that it will rain at least 20 days. d) Approximate the probability that there are more than 40 and less than 50 rainy days.

whatever you can spend with $11.53 or under.

step-by-step explanation:

20 - 8.47 = 11.53. take away the money he used for lunch from the starting amount of 20.

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

the answer is a.

step-by-step explanation:

in three games of golf, alex shot two under par four times.