In a triangle ABC, AB=90in BC=80in ans B measures 50° what is the approximate perimeter of the triangle

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

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2

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.