Simplify (n+3) (n-9)

02119a rectangular pool is 7 feet wide. it is 3 Times as long as it is wide

Given the expression A ∩ (B - C), can you use the distributive law to say: A ∩ (B - C) = (A ∩ B) - (B ∩ C) Why or why not?

a cylindrical can is used to fill a fish tank. the fish tank is a rectangular prism with a height of 30 inches, a width of 30 inches, and a length of 60 inches. the can has a diameter of 6 inches and a height of 8.

3.3x+r=23.1 solve for x

What is the area of the triangle? A right triangle with side lengths 3 inches, 4 inches, and 5 inches. A. 6 square inches B. 7 and one-half square inches C. 10 square inches D. 12 square inches

A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporters data is valid or not?

I am very confused on how to figure out if y = 3/4x is proportional?

Alison wants to buy a mountain bike for $339.12. If she saves $28.26 each month, in how many months will she be able to buy the bike?

At 12 o'clock the temperature was 7°C. The temperature decreased by - 20°C. What is the new temperature?

Ashleys rentals charges $27.50 per hour to rent a surfboard and a wetsuit. Darlas surf shop charges $23.25 per hour to rent a surfboard plus $17 extra for a wetsuit.