Thirty work orders are selected from a filing cabinet containing 500 work order folders by choosing every 15th folder. which sampling method is this

22 + (-18) find the sum of the answer

Find the surface area of the cylinder. 9 cm 19 cm

Raeana is twice as old as Madeline, and Laura is 10 years older than Raena. If Laura is 50 years old, how old is Madeline? Define your variables.

Do the lines - x+5y=22 and 7x-2y=19 intersect

Mrs. Frawley bought 15 tickets to the park for her class and 15 meal vouchers that cost $5.45 each. What was the total amount of money she spent if she had a $12.50 off coupon? SHow all work.

Simplify the expression by combining like terms. 15+12-5+4-7

If the second term of an arithmetic sequence is 5 and the fourth term is 12, what is the 37th term?

SAT scores are normally distributed, with a mean of 1000 and a standard deviation of 200. Approximately 68% of the scores lie between A.) 600 and 1400 B.) 680 and 1680 C.) 700 and 1300 D.) 800 and 1200

Amir drove from Jerusalem to the lowest place on Earth, the Dead Sea. His altitude relative to sea level (in meters) as a function of time (in minutes) is graphed. How long was each descent by 88 meters?

12v = 9v + 6 solve for v