Kelly rolls two number cubes. Determine the probability of each of the
following events.
Express each probability as a fraction in simplest form.
A. The sum of the number cubes is 7.
B. The sum of the number cubes is less than 4.

Find the height of a square pyramid that has the volume of 32 ft.³ and a base lengthof 4 feet

Aline is perpendicular to another line m2= (-1/m1), where m1 is the slope of the original line and m2 is the slope of the perpendicular line. which of the following equations represents the line that passes through the point (-2,1) and is perpendicular to the line below?

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)