The area of a triangle is twice the area of a square. if the base of the triangle and a side of the square are equal, what is the ratio of the height of the triangle to the side of the square?

One card is dealt from a 52 card deck. find the probability that the dealt card is a 4 or a black 7

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.

Erik buys 2.5 pounds of cashews. if each pound of cashews costs $7.70, how much will he pay for the cashews?