Find the standard deviation of the dа ta: 10, 8, 15, 20, 6, 14, 11, 12, 9

An object 3.9 feet tall casts a shadow that is 11.7 feet long. how long in feet would the shadow be for an object that is 13.2 feet tall?

The average price of gasoline in a recent year was $2.38. Which is the price per gallon of gasoline to the nearest tenth of a dollar

Maureen earns $12 an hour babysitting. She spent $65 on a phone for her babysitting business. Maureen needs to save at least $300 for a camping trip that she wants to take.

Tony's class needs more than $500 for the school dance. So far, they have raised $200. They plan to have a car wash, charging $8 a car, to raise more money.

Andrew wants to complete an extra credit worksheet for his math class. He completes 6 math problems on the first day and then 3 problems each day until the worksheet is complete. There are 18 promblems on the worksheet. write and solve an equation.

What is the area of a circle with a radius of 7 centimeters? (Use ∏r²)

Name a subject other than math in which symmetry is important

Reasoning A cone with radius 4 and height 9 has its radius quadrupled. How many times greater is the volume of the larger cone than the smaller cone? Explain how the volume of the cone would change if the radius were divided by four.

If you take - 3/10 of a number and add 1, you get 10. Write an equation to represent the situation. What is the original number?

The sampling distribution for the variance estimator in ANOVA is chi-square regarless of the assumptions of the data