The following octagon is formed by removing four congruent right triangles from a rectangle. What is the area of each triangle?

2 cm2
4 cm2
8 cm2

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

What is 100,000 times 1/100,000, using the standard method of multiplication? write the answer as 10 to a power.

Find the area of the region that is inside r=3cos(theta) and outside r=2-cos(theta). sketch the curves.