Answer:
Step-by-step explanation:
check the attached files below
Answer:
1) Circumference = 2πr
C = 2 x π x 9
C = 18π = 56.548... = 57 inches (to the nearest inch)
2) 6h = $52.50
1h = $52.50/6 = 8.75
11h = 8.75 x 11 = $96.25 = $96 (to the nearest cent)
(57)
Answer:
d 4/5
Step-by-step explanation:
is the best answer of d 4/5
Answer:
3.56 you little silly dum dum girl
Answer:
The probability that a call last between 4.2 and 4.9 minutes is 0.4599
Step-by-step explanation:
Let X be the length in minutes of a random phone call. X is a normal distribution with mean λ=4.2 and standard deviation σ=0.4. We want to know P(4.2 < X < 4.9). In order to make computations, we will use W, the standarization of X, given by the following formula
We will use , the cummulative distribution function of W. The values of are well known and the can be found in the attached file
We conclude that the probability that a call last between 4.2 and 4.9 minutes is 0.4599