1. If a student's course grade was a B, what is the probability that a randomly selected student did at least 30 minutes of homework at night? 2. Are the events "did at least 30 minutes of homework l" and "course grade is a B" independent? Explain your answer.

Dexter read 11 science fiction books and 5 history books. lena read 9 science fiction books and 4 history books. compare the students’ ratios of science fiction books to history books. 1. determine the ratios’ form:    science fiction books to history books 2. write the ratios as fractions:    dexter: 115; lena: 94 3. rewrite with a common denominator. 4. compare. 5. answer the question. determine which shows the correct comparison of the ratios for this problem.

What is the value of x in the this question ?

Find the slope of the line passing through a pair of points