Which of the following arguments are valid? Explain your reasoning. (a) I have a student in my class who is getting anA. Therefore, John, a student in my class, is getting an A.

(b) Every Girl Scout who sells at least 30 boxes of cookies will get a prize. Suzy, a GirlScout, got a prize. Therefore, Suzy sold at least 30 boxes of cookies.

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Reagan lives five miles farther from school than vanessa lives. write an expression to describe how far reagan lives from school

The ratio of the perimeters of two similar triangles is 4: 3. what are the areas of these triangles if the sum of their areas is 130cm2?