Answer this question, PLEASE A factory has 3 workshops, the output rate is 20%, 30%, 50%. The percentage of first-line products of workshops is: 90%, 85%, 80%.
a) randomly obtaining a factory product. probability to be a type one product.
b) get a refund 5 times at a time, one product at a time. Calculate the probability to have 3 times to get a first-type product.

Find the number of real number solutions for the equation. x2 + 5x + 7 = 0 0 cannot be determined 1 2

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.

A25- foot ladder leans against a building and reaches a point of 23.5 feet above the ground .find the angle that the ladder makes with the building