What is 2S=n (a+k)

(solve for k)

96 passengers rode in a train from City A to City B. Tickets for regular coach seats cost $111. Tickets for sleeper cars seats cost $297. The receipts for the trip totaled $20,700. How many passengers purchased each type of ticket?

What is 7 1/7 as an improper fraction

A simple random sample of size n is drawn from a population that is normally distributed. the sample mean, x overbar , is found to be 106 , and the sample standard deviation, s, is found to be 10.

The sales tax for an item was $40.50 and it cost $450 before tax. Find the sales tax rate. Write your answer as a percentage.

Mr. Torres took his students to the dolphin show. Each row in the stadium has 11 seats. One adult sat at each end of the row, and each group of 4 students was seated between 2 adults. Mr Torres sat by himself. How many adults were there?

walt averages 98 miles per hourin 4 races. if each race is 95 miles in lenght, how many miles did walt drive in the race?

What are all the sets of numbers for 2/3

What is the square root of 16x36? 4x6 4x18 8x6 8x18

4x-5 (x-2) = 12x+4-x ?

To maintain an acceptable level of chlorine in your pool you add 1.4gallins of chlorine. This is 0.007℅ of the amount of water in your pool. How many gallins of water are in your pool