Which mathematical property is demonstrated?

7 + 9 + 3 = 7 + 3 + 9

associative property of addition

commutative property of addition

associative property of multiplication

commutative property of multiplication

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?