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Mars2501 [29]
2 years ago
6

The selling price is $750. The rate of the sales tax is 5%. How much is the sales tax?

Mathematics
1 answer:
ElenaW [278]2 years ago
5 0

Answer:

37.5

Step-by-step explanation:

Selling price= 750

Sales tax= 5%

5/100 because we are looking for 5% ot of 100%

750*0.05

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A pond contains 110 fish, of which 20 are carp. If 10 fish are caught from the lake, what are the mean and variance of the numbe
Varvara68 [4.7K]

Answer:

Mean = 1.82

Variance = 1.365

Step-by-step explanation:

We define X as the random variable that counts the number of the carp fishes that has been caught. Also we assume that all the fishes are equally likely to be caught. In that case we have that X as hypergeometric distribution.

The of the Hypergeometric Distribution and Its variance is given below.

Mean of the distribution = n*\frac{k}{N}

Variance = \frac{n*k*(N-k)(N-n)}{N^2(N-1)}

N= 110

k = 20

n = 10

Upon calculation we get

Mean = 10*\frac{20}{110}

          = 1.82

Variance = \frac{10*20*(110-20)(110-10)}{110*110*(110-1)} = 2*90*100/11*11*109 = 1.365

Therefore the mean is 1.82 and variance is 1.365

7 0
3 years ago
Which of the following are solutions to this equation 3n+4=24-n a) n=1 b) n=3 c) n=5 d) n=7​
g100num [7]

Answer:

The correct option is c) n=5.

Therefore the solution to

3n+4=24-n

is

n=5

Step-by-step explanation:

Given:

3n+4=24-n

To Find;

n = ?

Solution:

3n+4=24-n      ........Given

Add + n to both the side

3n+4+ n=24-n+n\\4n+4=24

Now Subtract 4 on both the side

4n+4-4=24-4\\4n=20

Dividing by 4 on both side

\dfrac{4n}{4}=\dfrac{20}{4}\\\\n=5

Therefore the solution to

3n+4=24-n

is

n=5

4 0
2 years ago
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Answer:

y = -\frac{1}{3}x + 5

Step-by-step explanation:

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Arada [10]

Answer:

B

Step-by-step explanation:

open circle means no underline and it is past the 6 so it is B

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3 years ago
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Answer:

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Step-by-step explanation:

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