Which equations show that the set of whole numbers is closed under multiplication?

Choose all answers that are correct.

A.

-1 • - 1 = 1

B.

0 • - 1 = 0

C.

0 • 2 = 0

D.

2 • 1 = 2

Factor by grouping 3v^3-2v^2+6v-4

How do you find the ratio of 42 girls to 63 boys?

By rounding each number to 1 significant figure, estimate the answers to 8.2 x 6.7 divided by 0.46

What is the value of x? 3 • (-4) • x x =

A group of tourists can be sorted into tour boats in groups of 4 or in groups of 6. In either case, there are no empty seats. Find the number of tourists if there are more than 25 and fewer than 45.

Solve for x: 5x + 2 = 4x - 9. 7 -7 11 -11

Ron practice piano 1 & 2/3 hours on Monday and 5/6 hours on Tuesday. how much did he practice altogether?

Simplify. (2x^2 + 7x + 10) - (x^2 + 2x - 9)

5/6 of 18 pencils equals

What is a difference of squares that has a factor of x + 8?