Humans usually have 20 baby teeth, which are replaced by 32 adult teeth. raúl said he has lost 6/20 of his baby teeth. write two fractions equivalent to this number. explain how you came up with the fractions.

What is the solution to the system of equations? (–2, –8) (–1, –5) (0, –2) (2, 4)

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)?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?