A single tree produces about 2.6 * 102 lb of oxygen each year. The Amazon rainforest has about 3.9 * 1011 trees.

About how many pounds of oxygen are produced in the rainforest each day

28 33 45 57 39 36 which of the numbers above could be subtracted from 84 without reagrouping?

Which describes all decimals that are rational numbers? The decimal terminates or repeats. The decimal terminates and does not repeat. The decimal repeats and does not terminate. The decimal neither terminates nor repeats.

4.05 kilometers as meters. How many meters would that be?

Annika's class earned $120 in 1 hour and 30 minutes. At this rate, how much will they earn during the 6 hours the carnival is open?

Multiply and simplify: 6xy3z • 3x2yx2

The data represents the size of 9 randomly selected households. {4, 3, 2, 8, 5, 6, 3, 10, 3} What is the five-number summary?

What two products do you get when you cross-multiply the fractions 2/5 and 3/8? a 10 and 12 b 6 and 40 c 16 and 15 d 3 and 5

Identify how many moles are in 3.01 x 10 exp 21 molecules

How many times does 50 go into 100

What is the expression for "the difference between four times a number and three times that number"? 4 (3 - N) 4N - 3N 3N - 4N