Understanding Positive and negative numbers

Find derivative of 2cosx+2cos2x

Given AC = LN and BA = ML, which statement must be true? BC MN BC = MN BA = LN

What is the percent of decrease from year 2 to year 3? 2 was 2500 and 3 was 2240

H=65-1.4x what is the initial value?

Which is equivalent to 9/4

The length of a rectangle is 1 ft more than double the width, and the area of the rectangle is 45 ft2. find the dimensions of the rectangle.

Each minibus seats 14 people, and the school owns 5 minibuses. Use mental math to find how many students can ride in the school's minibuses at the same time. Show your work.

Find the x and y intercepts of 8x 4y=56

Factor completely x2 - 10x + 25. (x - 5) (x - 5) (x + 5) (x + 5) (x + 5) (x - 5) (x - 25) (x - 1)

2/3=1.2/x solve for x