In the freshmen class, 65% of the students take math, 45% take science, and 35% take both science and math. a)what percentage take at least one (science or math)course? b)what percentage take science only? c)what percentage take mathonly?

What is the reflection image of (5,-3) across the line y = -x?

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)?

The volume of gas a balloon can hold varies directly as the cube of its radius. imagine a balloon with a radius of 3 inches can hold 81 cubic inches of gas. how many cubic inches of gas must be released to reduce the radius down to 2 inches?