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ruslelena [56]
3 years ago
15

What is -2 sqrt20 - sqrt125

Mathematics
1 answer:
alexdok [17]3 years ago
5 0

Answer:

-9sqrt(5)

Step-by-step explanation:

-2 sqrt20 - sqrt125

Lets simplify the square roots

sqrt(ab) = sqrt(a)sqrt(b)

-2 sqrt(4) sqrt(5) - sqrt(25) sqrt(5)

-2 *2sqrt(5) - 5sqrt(5)

-4sqrt(5) -5sqrt(5)

-9sqrt(5)

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The midsegment theorem says that the midsegment is half the third side and parallel as well. 20*2 is 40 so x = 35
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Graph

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There were four beagles and three golden retrievers what’s the part to part ratio
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Answer:

4:3

Step-by-step explanation:

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3 years ago
According to a study conducted in one city, 39% of adults in the city have credit card debts of more than $2000. A simple random
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Answer:

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Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

In this question:

p = 0.39, n = 100

Then

s = \sqrt{\frac{0.39*0.61}{100}} = 0.0488

By the Central Limit Theorem:

The sampling distribution of the sample proportion of adults who have credit card debts of more than $2000 is approximately normally distributed with mean \mu = 0.39 and standard deviation s = 0.0488

5 0
3 years ago
I really need help someone answer pls
MArishka [77]

Answer:

(4)The lowest common denominator of 3 and 8 is 24.

(5) The lowest common denominator of 5 and 10 is 10.

(6) The lowest common denominator of 7 and 3 is 21.

(7) The lowest common denominator of 4 and 5 is 20.

(8) The lowest common denominator of 2 and 12 is 12.

(9) The lowest common denominator of 15 and 5 is 15.

Hope this helped! :)

3 0
2 years ago
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