Simplify the expression. sin2x + sinx + cos2x - 1 sinx sinx - 1 sinx - 2

Factor the four-term polynomial. mn - 10n - 2m + 20

Find the domain of f for f (x) = the square root of 2x+7

What is a perfect square between 81 and 121

The perimeter of a rectangle is equal to twice the sum of its length and its width. One rectangle has a length of 13 1/8 inches and a perimeter of 42 1/2 inches. Write an equation that can be used to find the width, w, of the rectangle.

Ben dives from a 36 foot platform. The equation h=-16t + 14t+36 models the dive. How long would it take Ben to reach the water?

Both Wilma's and Betty's pools hold 9000 gallons of water. If Wilma's garden hose fills at a rate of 750 gallons per hour while Betty's garden hose fills at a rate of 650 gallons per hour, how much longer does it take Betty to fill her pool than

One person can do a certain job in six days, a second person can do the same job in two days, and a third person can do this job in three days. how many days will they take to do the job together?

What is the area of this circle

What is the interest earned on $12,000 invested at 5.25% simple interest for 5 years?

Factor the GCF: 12a3b + 8a2b2 - 20ab3