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levacccp [35]
3 years ago
5

A friend has placed a large number of plastic disks in a hat and invited you to select one at random. He informs you that they h

ave numbers on them, and that one of the following is the probability model for the number on the disk you have chosen. Which one is it?
Mathematics
1 answer:
poizon [28]3 years ago
7 0

Answer:

The underlying probability distribution can't be determined  with certainty in this case from the given data, but if we have to take one it would be most preferably the 'Normal Distribution'.

Step-by-step explanation:

The distribution is most probably 'Normal Distribution' as we know that it is the most general and common distribution of all and from the central limit theorem if there is a large sample from any  probability distribution with finite mean and variance, the sample mean approaches a suitable normal distribution and for most of the distributions when the parameters tend to a certain value or may be that is ∞ , the resulting distribution tends to a suitable normal distribution , but the underlying probability distribution can't be determined with certainty in  this case from the given data.

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5x + 2x + 2 = 9x + 4​
bija089 [108]

Step-by-step explanation:

Given

5x + 2x + 2 = 9x + 4

9x - 5x - 2x = 2 - 4

9x - 7x = - 2

2x = - 2

x = - 2 / 2

Therefore x = -1.

5 0
2 years ago
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Help me find three different ratios that are equivalent to 3:11!! I need a explanation too!
SVEN [57.7K]
You can do
3 * 2 and 11 * 2 which would be 6:22 and is still equal to the ratio 3:11. Your explanation can be the when divided by 2 or the number you multiplied by, you would get the original ratio
Examples:
6:22
9:33
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8 0
2 years ago
135 miles on 4 gallons of gas
8_murik_8 [283]
To find out how many miles 1 gallon of gas uses we will divide.

135 ÷ 4 = <span>33.75

Check our work:-

33.75 </span>× 4 = 135

So, <span>33.75 miles per gallon.

Hope I helped ya!!</span>
3 0
2 years ago
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A car with an initial cost of $26,500 depreciates at a rate of 7.5% per year. Write the function that models this situation. The
solniwko [45]

Answer:

f(x) = 26500 * (0.925)^x

It will take 7 years

Step-by-step explanation:

A car with an initial cost of $26,500 depreciates at a rate of 7.5% per year. Write the function that models this situation. Then use your formula to determine when the value of the car will be $15,000 to the nearest year.

To find the formula we will use this formula: f(x) = a * b^x. A is our initial value which in this case is $26500. B is how much the value is increasing or decreasing. In this case it is decreasing by 7.5% per year. Since the car value is decreasing we will subtract 0.075 from 1. This will result in the formula being f(x) = 26500 * (0.925)^x. Now to find the value of the car to the nearest year of when the car will be 15000 we plug 15000 into f(x). 15000 = 26500 * (0.925)^x. First we divide both side by 26500 which will make the equation: 0.56603773584=(0.925)^x. Then we will root 0.56603773584 by 0.925. This will result in x being 7.29968 which is approximately 7 years.

4 0
3 years ago
josh got 20% discount at a sale. He got a new shirt for $12. what was the original price of the shirt
jenyasd209 [6]

Answer:

$15.00

Step-by-step explanation:

6 0
2 years ago
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