If Z1 = 12 + 6݅ and Z2 = a + bi (where a, b ∈ R) are two complex number, we can say that the product Z1Z2 is imaginary A) If and only if a = b = 0 B) If b = 2a C) If a = −2b D) for each value of a and b

The multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

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.