An employee at a paint manufacturing plant is mixing highly pigmented paint with some paint that is less pigmented. in addition to a large supply of 11%-pigment paint, he also has 230 liters of 21%-pigment paint. how many liters of the 11%-pigment paint should he add to the 21%-pigment paint to generate a batch of 18%-pigment paint?

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?

4percent of a number is what fraction of that number? ? i really need asap

Find the product. simplify your answer. (9/4s) (9t/-1)