What is the probability of rolling two dice, and having a total of 8 dots showing? Express your answer as a percent rounded to the nearest hundredth.

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?

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

If a and −a are numbers on the number line, which expression must give the distance between them? a) 0 b) a c) |2a| d) |a|