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3 years ago

WHOEVER ANSWERS GETS 20 POINTS

Mathematics

1 answer:

Ludmilka [50]3 years ago

3 0

Hey guys it’s ya boo skinny penus

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If cot x = .78, what is tan x

Vanyuwa [196]

We know, tan x = 1 / cot x
So,tan x = 1/ 0.78
tan x = 1.28

In short,Your Answer would be 1.28

Hope this helps!

3 0

3 years ago

Service calls arriving at an electric company follow a Poisson distribution with an average arrival rate of 5656 per hour. Find

liberstina [14]

Answer:

The average number of service calls in a 15-minute period is of 14, with a standard deviation of 3.74.

Step-by-step explanation:

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval. The variance is the same as the mean.

Average rate of 56 calls per hour:

This means that $\mu = 56n$ , in which n is the number of hours.

Find the average and standard deviation of the number of service calls in a 15-minute period.

15 minute is one fourth of a hour, which means that $n = \frac{1}{4}$ . So

$\mu = 56n = \frac{56}{4} = 14$

The variance is also 14, which means that the standard deviation is $\sqrt{14} = 3.74$

The average number of service calls in a 15-minute period is of 14, with a standard deviation of 3.74.

4 0

3 years ago

Here are four number cards.

vfiekz [6]

Answer:

its number 6

Step-by-step explanation:

6 0

3 years ago

Tap A fills 10/11 of a bottle in a minute. Tap B fills 3 4/5 times as many bottles as Tap A in a minute. Find the number of bott

Lunna [17]

Answer:

Tap B fills 4/5 in a minute.

Step-by-step explanation:

3 4/5-10/11

14/5-10/11=4/5

5 0

3 years ago

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there are 8 rows of chairs in the auditorium.three of the rows are empty. what fraction of the rows are empty?

Phantasy [73]

3/8 of the rows are empty. The three rows that are empty (3) would be in the numerator while the total amount of rows (8) would be in the denominator.

8 0

3 years ago

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