Select all that justify the following statement. 8.3+(-1)+5 = 5
m associative - addition
o commutative - multiplication
un symmetric
om inverse - multiplication
mm commutative - addition
inverse - addition
mm associative - multiplication

Find the greatest common factor of 270 and 360. (give the answer in the numerical form in the top box and in exponential form by filling in the boxes for exponents.) 2* **

Students are given 3 minutes for each multiple-choice question and 5 minutes for each free-response question on a test. there are 15 questions on the test, and students are given 51 minutes to take it.how many multiple-choice questions are on the test?

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2