A set of quiz scores is shown in the histogram below. The mean of the data set is 20.2, and the (population) standard deviation is 2.4. How many numbers in the data set are within 1 standard deviation of the mean?

True or false? An airplane is flying west at 200 km/h. Two hours later, it is flying west at 300 km/h. Its average acceleration is 100 km/h2.

What is the ratio of 3 eggs for every 2 cups of sugar

A person plans to invest a total of $3500 in one bank account at 2.6% annual interest and another bank account at 15% annual interest. How much should he invest in each account so that the total interest in one year will be $153.

Find a number that is 4 more that is 4 more than 6 plus 4

What is the constant proportionality of y=72 and x=3

Remember that you can multiply by the reciprocal of the divisor when you divide by a fraction. find each quotient. simplify if possible 1. 1/3:2 2. 1/7:7 3. 1/2:8 4. 1/8:2

Draw a area model to solve the following. Find the value of the following expression. 30 * 60

15 nickels are stacked vertically how many inches tall is the stack

Isabelle desperately wants an I-Pod Touch. After researching on-line she discovers the l-Pod she wants is $300. After begging her parents to buy the l-Pod for her, they make a deal with Isabelle.

A bag contains 1 red, 2 yellow, 3 white, and 3 pink jelly beans. If one jelly bean is drawn find p (yellow)