Use counters or a number line to find the sum.
-4 + (-6)

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)?

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

What are the values of each variable in the diagram below?