Use the signed numbers to solve.

A helicopter descended 1200 feet, rose 800 feet, and then descended 450 feet. What was the net gain or loss in altitude?

How many 3 digit numbers have exactly 2 digits that are the same

Answer in simplest form.

Write a ratio for the following description: for every 6 cups of flour in a bread recipe there are two cups of milk

What is the answer to 677 x 44?

Write an algebraic expression to represent the area of the triangle. Area of triangles is one half base times height. The height is h, and the base is h + 6. Find the area if h is 12 inches.

The circumference of the base of a cylindrical tank is 88m and it is 15m deep. Find how much litres of water can be filled in the tank?

What is the exact value of tan (-pi/3) ?

Jabir buys 2.74 pounds of dried pinto beans and 4.05 pounds of dried lima beans. what is the difference between the wieghts of beans that jabir buys

Tyron and his friends go to a movie theater where large tub of popcorn costs $8.25 and a medium soda costs $3.75 tyrone has $30 to spend on popcorn and soda.

Kim sold 20% of the 30 boxes of candy she had to sell. What PART of the candy did Kim sell?