A number is called a perfect number if it equals the sum of all of its factors except itself. For instance, 6 is perfect number because its factors are 1,2,3 and 6 and 1+2+3=6. What is the next greater perfect number?

How to tell if the sine, cosine and tangent of a angle are negative or positive?

What are the domain and range of the real-value function f (x) = -2+√x+7

The height of a diver during a dive can be modeled by h=-16t^2, where h is height in feet relative to the diving platform and t is time in seconds. Find the time it takes for the diver to reach the water is the platform is 49 feet high

Lily has 83 pounds of oranges that she is putting into boxes. She is putting 7 pounds of oranges in each box. How many boxes does Lily need? 12 boxes 10 1/2 boxes 10 boxes 11 boxes

97 is what percent of 152?

The length of a rectangle is increasing at a rate of 3 cm/s and its width is increasing at a rate of 8 cm/s. When the length is 15 cm and the width is 6 cm, how fast is the area of the rectangle increasing?

In the figure below, triangle ABC is similar to triangle PQR, as shown below: what is the length side of PQ

You work for a catering company making cakes. The catering company must create a hexagonal cake for a tool company. Your company currently makes a small cake that is hexagonal and serves 8 people. The tool company wants one cake to serve 40 people.

What is the slope-intercept form of the linear equation 2x + 3y = 6?

Why is it important to line up the fraction strips on the left?