Answer:
A = 1.89 cm^2
Step-by-step explanation:
The base = 2.1
The height = 1.8
The formula for area of a triangle is given by
A = 1/2 b*h
A = 1/2 (2.1) * 1.8
A = 1.89 cm^2
Answer:
Step-by-step explanation:
74% of 160 = 118.4
Answer:2 whole sandwiches and 3/4 of another one
Step-by-step explanation:
Answer:
The probability that a randomly selected call time will be less than 30 seconds is 0.7443.
Step-by-step explanation:
We are given that the caller times at a customer service center has an exponential distribution with an average of 22 seconds.
Let X = caller times at a customer service center
The probability distribution (pdf) of the exponential distribution is given by;

Here,
= exponential parameter
Now, the mean of the exponential distribution is given by;
Mean =
So,
⇒
SO, X ~ Exp(
)
To find the given probability we will use cumulative distribution function (cdf) of the exponential distribution, i.e;
; x > 0
Now, the probability that a randomly selected call time will be less than 30 seconds is given by = P(X < 30 seconds)
P(X < 30) =
= 1 - 0.2557
= 0.7443