Use cross products to determine which of the following pairs of ratios cannot form a proportion. a. 1/3,3/9      b.2/3, 4/9      c.2/3, 4/6        d.1/3, 2/6

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)?

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

How can (square root of 25) ^2 be rewritten?