A = {1,4,5,7} B = {1,7,9,12}
Find A U B.
A) {1,4,5,7,9,12}
B) {1,7}
C) {1}
D) {4,5,7}

Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be 3. what sample mean would have a confidence level of 95% or a 2.5% margin of error?

Look at arnold's attempt to solve the equation for b: 3b = 12 b = 3 · 12 b = 36 describe the mistake that arnold made.

Look at triangle wxy what is the length (in centimeters) of the side wy of the triangle?