Simplify: 1/3 (6ab-9b) + 2/3 (9ab+12)

3x+4y:2 for x = 7 and y=10

Mr. Gatlin had each of his students record how many pieces of pizza they ate during the class party. How many more students ate 3 pieces of pizza than ate 5 pieces of pizza? a) 2 b) 3 c) 4 d) 5

The sum of a two-digit number is 12. the number formed by interchanging the digits is 54 more than the original number. what is the original number

Which number is missing from the puzzle 5, 6, 8, 3, 4, 4, 8, 6

The national mean SAT score in math is 550. Suppose a high school principal claims that the mean SAT score in math at his school is better than the national mean score. A random sample of 72 students finds a mean score of 574.

Tell which property is being illustrated. 13 + (29+7) = 13 + (7+29)

8$ of 25$ earned as profit what is the percentage

Which of the following is equiangular and equilateral? A. rhombus B. square C. rectangle D. parallelogram

Ryan works mowing lawns and babysitting. He earns $8.20 an hour for mowing and $7.70 an hour for babysitting. How much will he earn for 3 hours of mowing and 7hours of babysitting?

Expand the expression and combine like terms: 2 (-14+r) - (-3r-5)