Adiesel train left berlin and traveled north at an average speed of 25 km/h. a cattle train left at the same time and traveled in the opposite direction with an average speed of 35 km/h. find the number of hours the cattle train needs to travel before the trains are 600 km apart.

Brent wants to know what is 5 x 1/2

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0

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?