Nancy has 12 books in her library. she bought several books at a yard sell over the weekend. She now has 97 books in her library. How many books did she buy at the yard sell?

the difference between two numbers is 25 the smaller number is 1/6 of the larger number what is the value of the smaller number

Write an algebraic expression half the quantity of X plus Y?

Out of 100 students sampled, 70 of them said that they hoped to get married someday. With 95% confidence, what is the approximate percentage of the students in the population who hope to get married someday?

1. Carlos has $1,800 in a checking account set aside for summer expenses. He withdraws $150 per week to pay for expenses. Nicole has $1,100 in a checking account set up for money for an end of summer vacation.

Use the substitution method to solve the system -x+y=-1, 4x-3y=6.

In 2 hours a candymaker can produce 80 boxes that each contain 10 pieces of candy. How many pieces of candy does the candymaker produce in 6 hours?

What is the answer to 3 3/8 - 1 5/6=

Solve for x. 6 (x+1) - 2x-1 = (x+15) + (x+16) ?

3*3 - 3 - 3:3 - 3 - =

A bicyclist travels at a rate of 13 miles an hour. If the bicyclist continues at this rate, how many miles can the bicyclist travel in 0.5 hour?