Which mathematical property is demonstrated?

7 + 9 + 3 = 7 + 3 + 9

associative property of addition

commutative property of multiplication

associative property of multiplication

commutative property of addition

Kareen bought 12 pencils for $2.16. At the same unit price, how many pencils could he buy with $4.50?

How to write the number 249,104,330 in expanded form

How to spimplify the expression 19z-19z =

Assuming that there are 20. drops in 1.0 mL, how many drops are in 3.9 gallons? drops

The principal of mountain middle school has a big glass jar of marbles. The empty jar weighs 40.5 ounces, and each of the 1,000 marbles weighs 1.25 ounces. Find the total weight in ounces of the marbles.

There are 52 white keys and 36 black keys on a standard piano. What is the probability that if a person did not look and hit the keyboard twice that he or she would first hit a white key and then hit a black key?

Problem Page A rug is in the shape of a square. It measures 14 feet on each side. What is its perimeter?

Some people advise that in very cold weather, you should keep the gas tank in your car more than half full. Irene 's car had 5.5 gallons in the 14 -gallon tank on the coldest day of the year. Irene filled the tank with gas that cost $3.70 per gallon.

If N = 34, what is 7 - N?

A rectangle is divided into same size squares one row covers 1/8 of the whole rectangle there are 3 squares in each row how many squares are in a whole triangle