The probability of it raining on a given day is 3/8
what is the probability of its not raining

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

Donald has x twenty-dollar bills and 11 ten-dollar bill. how much money does donald have? write your answer as an expression.

Scores on the cognitive scale of the bayley-scales of infant and toddler development range from 1 to 19, with a standard deviation of 3. calculate the margin of error in estimating the true mean cognitive scale score, with 99% confidence, if there are 12 infants and toddlers in a sample.