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What is the standard deviation of the following data set?

8, 7, 8, 11, 9, 12, 15, 16, 17, 16, 18, 19,

Gary bought a car for $40,000. If V = 40,000 (.85) t represents the value of the car after t years, how long will it take the car to be worth less than one-fourth of its purchase price?

What is another way to represent the ratio 40:1?

Theo wants to use a cookie recipe that makes 36 cookies, but he wants to increase the number of cookies to 54. If the recipe calls for 2 cups of sugar, how much sugar should he use?

Kara's pet is 5 years younger than Alaiza's pet. The sum of their ages is 41. How old is Alaiza's pet?

The debate team has m members. Each member sold 5 coupon books as a fundraiser. Write an expression that shows the number of coupon books the club sold.

X is a normally distributed random variable with a mean of 11 and a standard deviation of 2.0. find the value of x for which 70.54% of the area under the distribution curve lies to the right of it. (note: the diagram is not necessarily to scale.

What is the root of this equation? 2x^2 - 4x + 9 = 0

Which division problem is equivalent to 2/5a. 5. divide 5 by 2c. cut 5 equal sections from a 2 foot long ribbond. split 5 cups of yogurt into 2 equal servings?

Translate into an equation and solve. what percent of 64 is 16? (do not round until the final answer. then round to two decimal places as needed.)

p: If every fourth card drawn is a spade, then 25% of the cards in a deck would be spades. If 25% of the cards in a deck are spades, then every fourth card drawn would be a spade.