Plutos distance P(t) (in billions of kilometers) from the sun as a function of time(t) (in years) can ve modeler by a sinusoidal expression of the form a×sin(b×t)+d. At year t=0, Pluto is at its average distance from the sun, which is 6.9 billion kilometers.

Question 5 spring semester final exam math evaluate

How much dextrose 70% must be mixed with dextrose 5% to prepare 1,000 ml of dextrose 20%?

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.