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Nina [5.8K]
3 years ago
7

+10+10+10+10+10 cuz iam bored still answer it

Mathematics
2 answers:
Nata [24]3 years ago
6 0

Answer:

50

Step-by-step explanation:

that is correct if u use a claculator

Charra [1.4K]3 years ago
4 0

Answer: 50

Step-by-step explanation:

Because that is the correct answer.

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The mean income per person in the United States is $50,000, and the distribution of incomes follows a normal distribution. A ran
sergij07 [2.7K]

Answer:

Yes. There is sufficient eveidence to support  the claim that Wilmington resident's earn more than the national average

Step-by-step explanation:

Given the following;

\alpha=Significance \ Level=0.05\\n=10\\\bar X=60000\\\ s=sample\  \sigma=10000

#We set our hypothesis as:

H_o:\mu\leq 50000\\H_a:\mu>50000

The rejection region of either hypothesis:

P(t>t_o)=0.05, we determine the critical values for this probability in the T distribution table;

t=1.833

=>We reject for all values greater than 1.833, t>1.833.

#We now determine the value of the test statistic as:

t=\frac{\bar X-\mu_o}{s/\sqrt{n}}\\\\=\frac{60000-50000}{10000/\sqrt{10}}\\\\=3.1623

We find that:

t=3.1623>1.833,\ \ \ Reject \ H_o

Hence, there is sufficient eveidence to support  the claim that Wilmington resident's earn more than the national average.

4 0
3 years ago
Given m∥n the value of x. (8x-20) (8x+8)
igomit [66]
I’m pretty sure this is your answer l

6 0
3 years ago
Post-test about graphs need help
Murrr4er [49]

Answer:

O A.     y=\frac{4}{3} x-\frac{1}{3}

Step-by-step explanation:

To find the equation of the line, we need to know the slope and the y-intercept.

so, let's start by the slope. We need two points given in the graph.

(4, 5) and (-2, -3)

Then use the Slope-Formula to identify the Slope of the line.

m = slope

m = \frac{y2-y1}{x2-x1}          Slope Formula

m = \frac{-3-5}{-2-4}           subtract the second y from the first y / second x from first x

m = \frac{-8}{-6}               Turn the fraction to positive because two negatives = positi-

m = \frac{8}{6}                 Simplify

m = \frac{4}{3}                 Final Answer

The slope of the line is \frac{4}{3} now what about the y-intercept?

The y-intercept is located at the y axis.

It determines how many units the graph goes up or down depending...

Well in this case, the y-intercept is negative because it is below on the yaxis

Then we must determine the y-intercept.

so we know is negative but it isn't exactly on a point so it is formed as a fra-

then we can determine it by seeing when it hits another unit (hard explainin)

y-intercept = -1/3

Final Answer: y = \frac{4}{3} x-\frac{1}{3}

7 0
3 years ago
Solve <br> 9x^2 + 3x = 20
Advocard [28]

Answer:

20 barriles diarios y en los trajes y que es el que

8 0
3 years ago
F(n) = 45 • (4/5) ^n-1
tatiyna
Evaluate answer is 9 • 4 ^n-1
7 0
3 years ago
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