The scores on an exam are normally distributed, with a mean of 74 and a standard deviation of 7. What percent of the scores are less than 81?

A. 84%

B. 13.5%

C. 50%

D. 16%

Use properties to find sum or product of 4 + (6+21)

A regular hexagon with a perimeter of 45 meters is dilated by a scale factor of 43 to create a new hexagon. What is the perimeter of the new hexagon?

What would be the answer to 2r+6 writing out the steps?

2 plus 3 equals 13 3 plus 4 equals 25 4 plus 5 equals 41 then 5 plus 6 equals

Biologists want to know how many fish are in a certain lake. On January 1, they removed 600 fish from the lake and tagged them.

What is the direct variation equation if y varies directly with x and y = - 9 when x = - 45?

Sabrina bought 8 gallons of paint. After she painted her shed, she had 4 gallons left over. How much paint did Sabrina use on her shed?

You invest $1,000.00 in one account and $4,000.00 in another account. Both accounts have the same interest rate over the same amount of time. How will the interest earned compare? A.) The $4,000.00 account will earn 2 times the amount of interest. B.

A step on a stairway is at least 8 inches high. What inequality should I write and solve to represent the minimum number of steps between floors that are 10 feet apart?

How to graph a proportional relationship and calculate the unit rate.