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wlad13 [49]
2 years ago
13

5^b/5^a=5^7. what is the value of a and b

Mathematics
2 answers:
Molodets [167]2 years ago
8 0
I dunno I’m not smart
son4ous [18]2 years ago
4 0

Step-by-step explanation:

there you gojsjdjskksk

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The number of phone calls that Actuary Ben receives each day has a Poisson distribution with mean 0.1 during each weekday and me
Dovator [93]

Answer:

There is a 0.73% probability that Ben receives a total of 2 phone calls in a week.

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 time interval.

The problem states that:

The number of phone calls that Actuary Ben receives each day has a Poisson distribution with mean 0.1 during each weekday and mean 0.2 each day during the weekend.

To find the mean during the time interval, we have to find the weighed mean of calls he receives per day.

There are 5 weekdays, with a mean of 0.1 calls per day.

The weekend is 2 days long, with a mean of 0.2 calls per day.

So:

\mu = \frac{5(0.1) + 2(0.2)}{7} = 0.1286

If today is Monday, what is the probability that Ben receives a total of 2 phone calls in a week?

This is P(X = 2). So:

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

P(X = 2) = \frac{e^{-0.1286}*0.1286^{2}}{(2)!} = 0.0073

There is a 0.73% probability that Ben receives a total of 2 phone calls in a week.

3 0
2 years ago
A donut shop made 50 donuts. They put frosting on 33 of the donuts. What is the ratio of the number of donuts with frosting to t
shtirl [24]

Answer:

33:50

Step-by-step explanation:

if there are 50 donuts that gives you 1 part of your answer. Then you have 33 donuts frosted there the other part. Glad I can help

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=2m%20-%20%28m%20%2B%201%29%20%3D%200" id="TexFormula1" title="2m - (m + 1) = 0" alt="2m - (m +
natali 33 [55]

Answer: ..........................................................................................................................................................................................................................................................

8 0
3 years ago
What is 225 square feet of 450
erik [133]
I assume you mean what percentage it is? if so:

225/450 = 50%
6 0
3 years ago
Creat an expression without parentheses that is equivalent to 4(6x+x)
Dimas [21]
You could distribute this expression to get and even MORE simplified expression. Add the two terms in the parentheses together so that you get 4(7x). Now you can simply multiply 4 by 7x which would equal 28x. The new expression is 28x.
5 0
3 years ago
Read 2 more answers
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