Issac factored 8x2−20x−12 to (8x+4)(x−3) and claims his answer is correct because his factored solution simplifies back to the original quadratic expression. Is Issac correct? Why or why not?

Does anyone know how to do geometryme with this problem

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document

Monitors manufactured by tsi electronics have life spans that have a normal distribution with a standard deviation of 1800 hours and a mean life span of 20,000 hours. if a monitor is selected at random, find the probability that the life span of the monitor will be more than 17,659 hours. round your answer to four decimal places.