The phone lines to an airline ticket reservation system are occupied 40% of the time. assume that the events that the lines are occupied on successive calls are independent. (a) if 10 calls are placed, what is the probability that the lines are occupied for exactly 3 calls? (b) if 10 calls are placed, what is the probability that for at least 1 call the lines are not occupied? (c) a person makes 10 calls per day for 365 days in a row. for how many of those days do you expect that all 10 calls got through (i. e., that the lines were not busy for a single call)?

spinning a 1, 2, or 3. option d.

step-by-step explanation: when spinning a number graph up to 4, and aiming for any number less than 3, that automatically eliminates the number 4. now you have two numbers to spin on that are less than 3, but the number 3 is included in this question because it's no greater of an number than itself. i hope this you : )

the answer is b.

step-by-step explanation:

by the trigonometric ratio tangent, tangent equals opposite divided by adjacent.

therefore, tan(50) equals ac/3

multiply each side by 3 to get: ac=3tan(50)

the answer is b.

if x = 1, then the answer is 3.5

cant open file sorry!

step-by-step explanation: