A shipment contains 7 igneous, 5 sedimentary, and 5 metamorphic rocks. If 9 rocks are selected at random, find the probability that exactly 5 are sedimentary.

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

Is the figure congruent? yes or no?

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )