State the property demonstrated

1) 4 (x-10) = 4x-40

2) - 1 = (-1) ^3

A fire started at a campsite located 8 miles from the base at a mountain. If the angle of elevation from the fire to the top of the mountain is 14 degrees; how high is the mountain?

I want to know how to factor 25x^4 - 4x^5

There are seven books on the floor. The number of books on the shelf is two more than three times the number of books on the floor. How many books are on the shelf?

How to multiply and divide

N a pet shop, there are 15 kittens and 20 puppies. 25 of the kittens and puppies have beige fur. Ten of these beige fur animals are kittens.

What is the solution to 5=2/3x+1

If the length of the ramp will be 25 feet but the rise of the ramp will be 3.0 feet, approximately what will be the measure, in degrees, of the angle of elevation, angle A?

Is (-2) - 5 = 7? im not sure

light bulbs usually cost $2 they are on sale for 0.50 of the regular price. what is the sale price? is this a better price than if the sale price word 0.35 of the regular price?

Suppose that 10% of the general population has a disease and the test for the disease is accurate 80% of the time. What is the probability of testing postive for the disease