Of the 15 year olds at karate school 8 have black belts in 20 had Brown belts among 16 year olds 10 have black belts in 17 have Brown belts. which age group has a higher ratio of black belts to Brown belts

A city's population rose is 3% one year. 0.08 the next year, and by 2/50 the next year. Order these increases from least to greatest

Bryn invested $2700 into an account that grows at a 4% annual interest rate. If she made no additional deposits of withdrawals on the account, which of the following equations could be used to find the amount of money in Bryn's account after 7 years?

Is 5/12 greater than 1/6

Given the function f (x) = x^2 and k=2, which of the following represents a horizontal shift? F (x) + k, kf (x), f (x+k), f (kx)

Ron wants to calculate the sales tax on two items. He is purchasing a helmet for $42 and gloves for $5.65. Sales tax is 7%. Which expression shows how Ron should calculate his total sales tax? A $42 + $5.65 x 7 B $42 + $5.65 x 0.7 C ($42 + $5.

If there are 2 possible outcomes for event A, 6 possible outcomes for event B, and 4 possible outcomes for event C, how many possible outcomes are there for event A & event B & event C?

What does it mean if y and x equal zero?

A roller coaster begins at 90 feet above ground level. Then it descends 105 feet. Find the hight of the coaster after the first decent.

Determine the integer whose product with - 1 is 63

What is the standard deviation of the data set? 21 6 18 21 20 14 19 5.4 29.3 5.0 25.1