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Masja [62]
3 years ago
10

Find the solution to the system of equations by using a graphing calculator. Describe the steps you took to enter the informatio

n and find the solution. Sketch the graph showing both lines and the solution. open curly brackets table attributes columnalign left end attributes row cell y equals 4 x plus 3 end cell row cell x plus y plus 2 equals 0 end cell end table close
Mathematics
2 answers:
Luden [163]3 years ago
3 0

Answer:B.

Step-by-step explanation: I took the same class

OLEGan [10]3 years ago
3 0

Answer:

Step-by-step explanation:

Yes

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A table shows a proportional relationship where k is the constant of proportionality. The rows are then switched. How does the n
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Read all of it it’s gonna help alot

Step-by-step explanation:

6 0
3 years ago
Typing errors in a text are either nonword errors (as when "the" is typed as "teh") or word errors that result in a real but inc
nordsb [41]

Answer:

a) X is binomial with n = 10 and p = 0.3

Y is binomial with n = 10 and p = 0.7

b) The mean number of errors caught is 7.

The mean number of errors missed is 3.

c) The standard deviation of the number of errors caught is 1.4491.

The standard deviation of the number of errors missed is 1.4491.

Step-by-step explanation:

For each typing error, there are only two possible outcomes. Either it is caught, or it is not. The probability of a typing error being caught is independent of other errors. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

10 word errors.

This means that n = 10

(a) If X is the number of word errors missed, what is the distribution of X ?

Human proofreaders catch 70 % of word errors. This means that they miss 30% of errors.

So for X, p = 0.3.

The answer is:

X is binomial with n = 10 and p = 0.3.

If Y is the number of word errors caught, what is the distribution of Y ?

Human proofreaders catch 70 % of word errors.

So for Y, p = 0.7.

The answer is:

Y is binomial with n = 10 and p = 0.7

(b) What is the mean number of errors caught?

E(Y) = np = 10*0.7 = 7

The mean number of errors caught is 7.

What is the mean number of errors missed?

E(X) = np = 10*0.3 = 3

The mean number of errors missed is 3.

(c) What is the standard deviation of the number of errors caught?

\sqrt{V(Y)} = \sqrt{np(1-p)} = \sqrt{10*0.7*0.3} = 1.4491

The standard deviation of the number of errors caught is 1.4491.

What is the standard deviation of the number of errors missed?

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{10*0.3*0.7} = 1.4491

The standard deviation of the number of errors missed is 1.4491.

6 0
3 years ago
. If 3n + 8 = 44, what is the value of n?​
algol13

Answer:

3n + 8 = 44

Subtract both sides by 8.

3n = 36

Divide both sides by 3.

n = 12.

8 0
3 years ago
Read 2 more answers
P/2p+1-2p^2+5/2p^2-7p-4=5/p-4
mrs_skeptik [129]
The given equation in correct manner is :
\frac{p}{2p+1} - \frac{2p^2+5}{2p^2-7p-4} = \frac{-5}{p-4} 





So, <span>The values of p in the equation are (0) and (6)
</span>
<span>See the attached figure for the detailed solution.
</span>

4 0
3 years ago
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