What are the equivalence relation in the set {a, b, c, d} that define the pairs (a, b) and (CD)?

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Ten members of balin's soccer team ran warm ups for practice. each member ran the same distance. their combined distance was 5/6 of a mile. to find the distance that each member ran, balin wrote the expression below.