A sample of 12 measurements has a mean of 8.5 and a sample of 20 measurements has a mean of 7.5. Find the mean of all 32 measurements.

Find all the real sixth roots of 64.

A trapezoid has a height of 5.5 mm with bases of 8 mm and 2.4 mm. Draw a visual of the trapezoid, state a formula, and find the area of this trapezoid.

if you earn 20% more than I do, then I must earn 20% less than you. explain your answer

1.) There are 35 marbles in a bag:9 blue marbles, 8 marbles, 4 red marbles, 4 red marbles, 8 white marbles, & 6 yellow marbles. Find P (Red). Write the probability as a fraction in simplest form, a decimal, & a percent. A.) 4/31, 0.129, 12.

What is j squared equals 121

A sphere has a radius of 1.5 inches. What is the volume of the sphere rounded to the nearest tenth? Use 3.14 for pi. 9.0 in³ 14.1 in³ 28.3 in³ 36.4 in³

Sixty percent of the customers who go to Sears Auto Center for tires buy four tires and 22% buy two tires. Moreover, 12% buy fewer than two tires, with 6% buying none. Construct a cumulative probability distribution for the number of tires bought.

If a train with an average speed of 60 miles per hour travels for 20 minutes, how far will it have gone?

What value of x makes the equation true? 3 (x - 4) = 15 a - 1 b 1 c 7 d 9

What is the area of a classroom with a length of 30 feet and width of 15 feet