The crew for the spaceship ZETA must be chosen from aliens of 2 different species: Romulans and Webbans. Romulans have 2 hands and Webbans have 8 hands. If there are exactly 30 crew members,
and the crew must have a total of exactly 84 hands, then how many aliens are from Romula?

1. evaluate 8x(2)y9(-2) for x=-1 and y=2 2. simplify the equation. -() 3. simplify the expression. [tex]\frac{5}{x(-2) y9(5)}[/tex]

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.

During a wright loss challenge your friend goes from 125 pounds to 100 pounds. what was the percent weight loss