Simplify (8x2 - 1 + 2x3) - (7x3 - 3x2 + 1). I don't understand what I'm doing wrong.

A ladder that is 32 feet long leans against a building. The angle of elevation of the ladder is 70 degrees. To the nearest tenth of a foot how high off the ground is the top of the ladder?

What is 50% of 36? 9 16 18 34

A bottle holds 24 ounces of water. It has x ounces of water in it. What does 24 - x represent in this situation? Write a question about this situation that has 24 - x for the answers.

Solve the system of equations 2x+y=5 and y-x=2

How do i know if a number is prime or composite?

I have a chart. The top bar has the numbers, 150,300,450,600,750, and 900. The bottom has the numbers 10,30,45,60,75, and 90. I need to find the relationship between them, but I can't.

The sum of 2 times a number and 5 is 11

Factor out coefficient of variable for 4h-3

Every day a zookeeper feeds 4 adult gorillas a total of 160 lb of food,. At this rate how many pounds of food would the zookeeper need every day to feed 6 adult gorillas?

A rectangle has width twice its height. If the perimeter is 12cm what are the dimensions of the rectangle?