Suppose a+b=0 so what equals a-b

The sales tax in Canada was $35.80 for the purchase of a new computer which costs $895, what is the sales tax rate?

Which system of linear equations has the ordered pair (4, - 5) as a solution? a. 2x-5y=-30 and 7x+4y=-19 b. 6x-y=-29 and 8x+3y=-17 c. 3x-2y=22 and 2x+97=-37 d. 5x-6y=49 and x+8y=-27

Write an expression in simplest form for the perimeter of the exercise mat

What is the slope intercept form of the equation of the line 5x-6y=36

you are going to run at a constant speed of 6.5 miles per hour for 30 minutes. you calculate the distance you will run. what mistake did you make in your calculation? use the formula S=d/t

Alejandro has 5 7/8 pizzas left over from a party. Is 1/4 of a pizza is a serving how many servings does Alejandro still have left?

Simplify 5 (R + 2) - 6. A. 5R + 4 B. 5R - 4 C. 5R - 6

Meg started her trip with 11 1/2 gallons of gas in her car's tank. She bought an additional 6 4/5 gallons on her trip and arrived back home with 3 3/10 gallons left. How much gas did she use on the trip?

Two buses leave the same station, at the same time, traveling in the same direction. One bus is traveling at a rate of 32 miles per hour, while the second bus is traveling at a rate of 38 miles per hour.

Which expression is equivalent to 2r (3s-5) ? ... A. 5r-7s B. 6rs + 10r C. 2r (3s-5) D. 6rs-10r