Mrs. johnson has 10 blue pens, 14 black pens, and 4 red pens in a desk drawer. if she selects two pens at random without replacing them, what is the probability that she selects a red pen and then a black pen?

Rose drew a regression line for this paired data set. her line passed through (1, 2) and (3, 5) . what is the equation of rose's regression line?

Which is a true statement comparing the graphs of x^2/6^2-y^2/8^2 = 1 and x^2/8^2-y^2/6^2 the foci of both graphs are the same points. the lengths of both transverse axes are the same. the directrices of = 1 are horizontal while the directrices of = 1 are vertical. the vertices of = 1 are on the y-axis while the vertices of = 1 are on the x-axis.

If rt is greater than ba, which statement must be true ?