The number of failures of a testing instrument from contamination particles on the product is a poisson random variable with a mean of 0.024 failures per hour. (a) what is the probability that the instrument does not fail in an 8-hour shift? (b) what is the probability of at least 1 failure in a 24-hour day?

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

cant see photo

step-by-step explanation: