Ty makes balloon animals for birthday parties and wants to know what color balloons to buy. he surveys the 30 children closest to him. identify the type of sampling method.

a. self-selected
b. systematic
c. convenience

What is the quotient of 42/3 divided by 4 1/5

Using d, e, and f as values on a triangle and d being 60 degrees, what is the value of e and f if d is 60 degrees? also, what do you notice about the values of e and f?

Suppose sat writing scores are normally distributed with a mean of 497 and a standard deviation of 109. a university plans to award scholarships to students whose scores are in the top 2%. what is the minimum score required for the scholarship? round your answer to the nearest whole number, if necessary.