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2 years ago

6 is subtracted from a number. The result is divided by 4. This result is added to 10 to give 30. What is the number?

1 answer:

6 0

Answer: 86

Explanation: I started with 30 then reversed everything so I subtracted 10, multiplied by 4, and then added 6, and got the number 86. Then I checked the answer by subtracting 6 from 86, then divided it by 4, added it to 10, and the final number equaled 30.

I hope this is the answer you were looking for! I’m so sorry if it’s wrong!

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Assume that the number of messages input to a communication channel in an Exponential distribution with 7 messages arriving in a

NARA [144]

The probability that more than 3 messages will arrive during a 30-second interval is $P(X=n)=\dfrac{e^{-0.3 \times 20} (0.3 \times 20)^n}{n!}$ .

According to the statement

we have given that the an Exponential distribution with 7 messages arriving in a 10 second period and we have to find the probability that more than 3 messages will arrive during a 30-second interval.

So, For this purpose, we know that the

The probability is the measure of the likelihood of an event to happen. It measures the certainty of the event.

And the given information is that :

3 messages will arrive during a 30-second interval.

Then

Probability = P(X=1) + P(X=2) + P(X=3).Then

The probability become according to the exponential distribution:

$P(X=1)=\dfrac{e^{-0.3 \times 20} (0.3 \times 20)^1}{1!}\\P(X=2)=\dfrac{e^{-0.3 \times 20} (0.3 \times 20)^2}{2!}\\P(X=3)=\dfrac{e^{-0.3 \times 20} (0.3 \times 20)^3}{3!}\\$

And then substitute the values in it then

$Probability = \dfrac{e^{-0.3 \times 20} (0.3 \times 20)^1}{1!}\ +\dfrac{e^{-0.3 \times 20} (0.3 \times 20)^2}{2!}\ + \dfrac{e^{-0.3 \times 20} (0.3 \times 20)^3}{3!}\\$

This is the probability.

So, The probability that more than 3 messages will arrive during a 30-second interval is $P(X=n)=\dfrac{e^{-0.3 \times 20} (0.3 \times 20)^n}{n!}$ .

Learn more about probability here

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7 0

1 year ago

36^ - 1/2 Wich is equivalent? A -18<br> B -6<br> C- 1/18<br> D- 1/6

STatiana [176]

Answer:

3rd

Step-by-step explanation:

3 0

3 years ago

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Jeri is 3 years younger than Laura, whose age is x. How old is Jeri? x - 3 yrs old x + 3 yrs old 3x yrs old

laiz [17]

Answer:

X-3 yrs old

Step-by-step explanation:

Take Laura=X

Since Laura is X years old and Jeri is 3 years younger then Jeri's age = Laura's age- 3years so,

Jeri's age= X-3

8 0

2 years ago

“Camilla makes and sells jewelry. She has 8,160 silver beads and 2,880 black beads to make necklaces. Each necklace will contain

Usimov [2.4K]

<h3>Answer:</h3>

96 necklaces

<h3>Step-by-step explanation:</h3>

To find out how many necklaces Camilla can make, we need to see how many times the required number of beads "goes into" the available number of beads.

Silver: 8160/85 = 96

Black: 2880/30 = 96

Camilla has enough beads to make 96 necklaces.

_____

<em>Comment on this answer</em>

Obviously, if one of the quotients is smaller than the other, Camilla can only make as many necklaces as are supported by the constraining resource.

Even if she had 3000 black beads (way more than 2880), she could still only make 96 necklaces (for example) because she would run out of silver beads making that 96th necklace. (There would be 120 black beads left over in that scenario.)

4 0

3 years ago

What is the product of (–0.5)(–1.2)(–5.22)?

Gnoma [55]

-3.132 is the answer, you just had to multiply all of them one at a time (:

7 0

3 years ago

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