Jacqueline has a bag containing six black checkers and four red checkers. What is the probability of her selecting two black checkers if she does replace the first checker she pulls out of the bag before selecting the second checker?

Which of the following points is collinear with (-2,1) and (0,3)

Acoin bank containing only dimes and quarters has 12 more dimes than quarters. the total value of the coins is $11. how many quarters and dimes are in the coin bank?

An energy drink company claims that its product increases students' memory levels. to support its claims, the company issues advertisements claiming that 8 out of 10 people (chosen randomly from across the country) who tried their product reported improved memory. the missing component in this study is a .