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Amiraneli [1.4K]
3 years ago
13

What part of 20 is 25?

Mathematics
2 answers:
expeople1 [14]3 years ago
7 0
I’m sorry I don’t understand
Nesterboy [21]3 years ago
6 0

Answer:

O.8

Step-by-step explanation:

I’m assuming you’re dealing with percents and fractions so

20/25 = 0.8

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There is a raffle for a $950 prize. Out of 125 tickets, each costing $18, one ticket will win the prize, and the rest will win n
mr Goodwill [35]

The expected value formula is

E=\Sigma x\cdot P(x)

We know that there are 125 tickets, so the probability of the ticket is

P(x)=\frac{1}{125}

Then, we find the expected value

E=950\cdot\frac{1}{125}=7.60<h2>Hence, the expected value is $7.60.</h2>

5 0
2 years ago
Anticipated consumer demand in a restaurant for free-range steaks next month can be modeled by a normal random variable with mea
QveST [7]
A.
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Since about 95% of a normal distribution falls within two standard deviations of the mean, that leaves 5% that lie without, with 2.5% lying to either side.

\mathbb P(Z>-2)=\mathbb P(|Z|2)=0.95+0.025=0.975

b.
\mathbb P(1100

About 68% of a normal distribution lies within one standard deviation of the mean, so this probability is about 0.68.

c. You're looking for k such that

\mathbb P(X>k)=0.10

Since

\mathbb P(X>k)=\mathbb P\left(\dfrac{X-1200}{100}>\dfrac{k-1200}{100}\right)=\mathbb P(Z>k^*)=0.10

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3 0
4 years ago
Point L is on line segment KM. Given LM=11 and KL=4, determine the length KM.
Scorpion4ik [409]

Hey there! I'm happy to help.

Let's think of the line segment KM as a road. It starts at point K and ends at M. You start driving from point K and after 4 miles, you have reached point L. The segment KL is equal to 4 because the distance between K and L is 4.

From point L to point M, you drive 11 miles. You are now at the end of the road. We want to find out how long the road is.

From point K to point L, you drove for 4 miles.

Then, from L to M, you drove 11.

We combine these...

11+4=15

The length of KM is 15.

Have a wonderful day! :D

3 0
3 years ago
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9966 [12]
Okay, for the first part, you just add it all together. So 7x+19x+9+18. For the second part, just combine like terms. So you would get 26x+27.
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Thirty-six million four hundred twenty-seven thousand five hundred eighty.
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