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Lesechka [4]
3 years ago
6

Which equation results from adding the equations in this system?

Mathematics
2 answers:
german3 years ago
5 0
The table represents the relationship between the number of days, x, and the number of patients in a hospital showing flu symptoms.
100
18
13
Which statement is true?
The number of patients showing flu symptoms decreases at a constant rate as the number of days increases.
The number of patients showing flu symptoms decreases as the number of days increases but not at a constant rate.
The number of patients showing flu symptoms increases at a constant rate as the number of days increases.
The number of patients showing flu symptoms increases as the number of days increases but not at a constant rate.
Law Incorporation [45]3 years ago
4 0

Answer:

well, it's not c. Sorry I couldn't find the actual answer. Just took the test on edg

Step-by-step explanation:

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Ira Lisetskai [31]
Accepted properties, laws, and definitions
3 0
3 years ago
Find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p. n = 50 p = 0.2
Irina-Kira [14]

Answer:

The mean, variance, and standard deviation of the binomial distribution are 10, 8, and 2.83 respectively.

Step-by-step explanation:

We have to find the mean, variance, and standard deviation of the binomial distribution with the given values of n and p, i.e; n = 50 p = 0.2.

Let X = <u><em>binomial random variable</em></u>

So, X ~ Binom(n = 50, p = 0.2)

Now, the mean of the binomial distribution is given by;

         Mean of X, E(X) = n \times p

                                    = 50 \times 0.2 = 10

Now, the variance of the binomial distribution is given by;

        Variance of X, V(X) = n \times p \times (1 - p)

                                         = 50 \times 0.2 \times (1 - 0.2)

                                         = 10 \times 0.8 = 8

Also, the standard deviation of the binomial distribution is given by;

        Standard deviation of X, S.D.(X) = \sqrt{\text{n} \times \text{p} \times (1 - \text{p})}

                                                              = \sqrt{\text{50} \times \text{0.2} \times (1 - \text{0.2})}

                                                              = \sqrt{8} = 2.83

3 0
3 years ago
A librarian choose seven holiday books from a selection of ten to be displayed in the window of the library. in how many differe
Sergeu [11.5K]

Answer:

_{10}C_7=\frac{10!}{7!(10-7)!}\\\\=\frac{10!}{7!3!}=\frac{10\times 9\times 8\times ...}{(7\times 6\times 5\times...)(3\times 2\times 1)}\\\\=\frac{10\times 9\times 8}{3\times 2\times 1}=\frac{720}{6}=120

Step-by-step explanation:

A librarian choose seven holiday books from a selection of ten to be displayed in the window of the library. in how many different ways can she chose seven books?

This is a combination of 10 objects chosen 7 at a time:

_{10}C_7=\frac{10!}{7!(10-7)!}\\\\=\frac{10!}{7!3!}=\frac{10\times 9\times 8\times ...}{(7\times 6\times 5\times...)(3\times 2\times 1)}\\\\=\frac{10\times 9\times 8}{3\times 2\times 1}=\frac{720}{6}=120

3 0
3 years ago
What is the sum of 31 and the product of 234.
Ne4ueva [31]
The sum of 31 would i think be 15+16 and the product of 234 would maybe be 6 times 39? hope that helps :)
3 0
2 years ago
What is the radical of 495?
Slav-nsk [51]
<span>The square root of four hundred and ninety-five 3√55</span>
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3 years ago
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