tracy has 63 colors pens and jacob has 46 colors pens how many more colors pens does tracy have than jacob​

Adam drew two same size rectangles and divided them into the same number of equal parts. he shaded 1/3 of one rectangle and 1/4 of the other rectangle. what is the least number of parts into which both rectangles could be divided into?

What is the distance between the points 4,10 and -3,-14 on the coordinate plane

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?