7z-18 = - 2z + 19 solve for z. Show work.

60 customers per hour arrive randomly (i. e., cva = 1) and randomly join one of 6 unpooled queues. each of the six employees can handle exactly 15 customer requests per hour (i. e., no variability).

A card is drawn at random from a deck consisting of cards numbered 2 through 10. a player wins 1 dollar if the number on the card is odd and loses 1 dollar if the number if even. what is the expected value of his win - nings?

Explain how the unit rate for earning $34 in 8 hours

40% of collage students scored more than 70% on a math test. 120 students scored below that. How many total students took the math test?

Stacy and Travis are rock climbing. Stacy's rope is 4 feet shorter than 3 times the length of Travis' rope. Stacy's rope is 23 feet long. Write and solve an equation to find the length t of Travis' rope.

Clarence solved the equation 3x + 15 = 33 and showed the following work. 3x + 15 = 33 3x + 15 - 15 = 33 3x = 33 = x = 11 Which of the following is true?

Josh walks 5/6 of a mile on Monday he walks 3/8 of a mile on Wednesday Josh wants to know about how much farther he walked on Monday then on Wednesday which is a reasonable estimate

Original price $110 new price$96. What is the percent change?

The output of a function in 7 more than 3 times the input. find the input when the output is - 8

Which expression is equivalent to (4-3) - 6? 418 43 4-18 4-9