Rueben has scored 81, 89, 90, 83, and 77 on his previous five tests. what score does he need on his next test so that his average (mean) is 82?

Simplify the following expression 20x^3y^2/5x^3y^5

Working alone, it would take Shandra 45 minutes to mow the lawn. To mow the same lawn, also working alone, it would take Kelly 1 hour and 15 minutes. If they work together, the girls believe it will take them 1 hour to mow the lawn.

Sammy buy an outfit for $65 if hr had a coupon for 20% off how much will his outfit cost after the discount has been aplied

X^2-8xy+16y^2 factor completely

Convert the fraction 7/8 into a decimal number.

When rounding a number, what should you do with the digits to the right of the place to which you are rounding

Trevor earns $7.80 an our take-home pay and works 20 hours each week to buy a new laptop computer to take to college that cost $780 how many weeks will it take for church to achieve his goal

What is each sum or difference? (7-2i) + (-3+i) (1+5i) - (3-2i) (8+6i) - (8-6i) (-3+9i) + (3+9i)

Si: P (x) = 3x; R (x) = 2x; calcula : P (R (0))

What is the missing number in 12,24,72,288