Use factoring by difference of squares to solve the equation, x^2 - 81 = 0.

A. x = 9 or x = - 11

B. + / - 9

C. + / -

D. + / -

Brian rides his bicycle 24 miles in 2 hours. Write a ratio of Brain's miles per hour. Use the ratio from #1 to determine how far Brian can ride in 5 hours.

The label on a 3 1/2 pound bag of fertilizer states that it will cover an area of 437.5 ft.² of lawn. Based on this information what is the number of square feet that 1 pound of fertilizer will cover

I make 2.5 of popcorn and eat 750 of it while watching a movie. how much is left

The number of students at valley view middle school increased by 10%, To 770 total students were endrolled at valley view middle school before increase?

Three consecutive odd integers have a sum of 39. Find the integers.

Jeremy bought four books the cost of three of the books were $13, $10 and $15. the average cost of the four books is at least $14. what is the minimum cost of the fourth book?

Angelo family drove 254.6 miles their car used 19 gallons of gasoline describe the cars gas mileage

How much longer is a 12cm pencil than a 1 dm pen

The ratio of mass to volume is represented by grams over milliliter

A school assembly has 60 students in attendance and 75% of them are first graders. how many first-graders were at the assembly