Diana had 12 books. Then she went to a book sale and bought b more books. Choose the expression that shows how many books Diana has now.

Out of 100 students, 70 of them said that they hoped to get married someday. with 99.7% confidence, what is the approximate percentage of the students in the population who hope to get married someday?

The manager of a night club in boston stated that 95% of the customers are between the ages of 21 and 27 years. if the age of customers is normally distributed with a mean of 24 years, calculate its standard deviation.

A newspaper has more than 30 pages and fewer than 40 pages. The newspaper is divided into sections, and each section has 8 pages. How many sections dose the newspaper have.

418,832 rounded to nearest ten thousand

What is the average of 70?

Tickets to a local movie were sold at $4.00

A serving of Ice cream contains 6400 calories. 1600 calories come from fat. What percent of the total calories come from fat

What is an adjacent angle?

Apply the distributive property to create an equivalent expression. (7-4n) ⋅6=?

1/12+3/8y=5/12+5/8y, what does y equal