1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PtichkaEL [24]
3 years ago
12

In the​ 2009-2010 school year in country​ a, there were 117 comma 000117,000 foreign students from country

Mathematics
1 answer:
aev [14]3 years ago
4 0

I can't help you, but I can provide an example related to this question.

In the​ 2009-2010 school year in country​ A, there were 116,000 foreign students from country B. In the 2009-2010 school year in country A, there were 116,000 foreign students from country B. This number is 22% more than the number of students from country C. How many foreign students were from country C?

If x represents the number of students from country C.

then 122% of x = 116,000

122/100 * x = 116000

Transposing the formula for x;

<em>therefore x = 116000 * 100/122 = 95,082 students</em>

You might be interested in
Could you hlp me now
avanturin [10]

Answer: A

Step-by-step explanation:

The ratio is simply 2:5

You are comparing the two times

8 0
3 years ago
Read 2 more answers
The delivery times for all food orders at a fast-food restaurant during the lunch hour are normally distributed with a mean of m
UkoKoshka [18]

Answer:

Let X the random variable that represent the delivery times of a population, and for this case we know the distribution for X is given by:

X \sim N(14.7,3.7)  

Where \mu=14.7 and \sigma=3.7

Since the distribution of X is normal then we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

And we have;

\mu_{\bar X}= 14.70

\sigma_{\bar X} =\frac{3.7}{\sqrt{40}}= 0.59

Step-by-step explanation:

Assuming this question: The delivery times for all food orders at a fast-food restaurant during the lunch hour are normally distributed with a mean of 14.7 minutes and a standard deviation of 3.7 minutes. Let R be the mean delivery time for a random sample of 40 orders at this restaurant. Calculate the mean and standard deviation of \bar X Round your answers to two decimal places.

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".  

Solution to the problem

Let X the random variable that represent the delivery times of a population, and for this case we know the distribution for X is given by:

X \sim N(14.7,3.7)  

Where \mu=14.7 and \sigma=3.7

Since the distribution of X is normal then we know that the distribution for the sample mean \bar X is given by:

\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})

And we have;

\mu_{\bar X}= 14.70

\sigma_{\bar X} =\frac{3.7}{\sqrt{40}}= 0.59

4 0
3 years ago
X^2-8x+6 in vertex form
kompoz [17]
x^2-8x+6=\\&#10;x^2-8x+16-10=\\&#10;(x-4)^2-10
4 0
3 years ago
Solve 5n – 7p + 3n = 25p for n.
saul85 [17]

5n – 7p + 3n = 25p

Combine like terms

8n - 7p = 25p

Add (7p) to both sides

8n - 7p + 7p = 25p + 7p

Simplifying

8n = 32p

Divide both sides by 8

8n / 8 = 32p / 8

Simplifying

n = 4p

7 0
3 years ago
Read 2 more answers
If mark got 6 questions out of 40 incorrect what percent of the questions did he get correct?
kap26 [50]
So if 6 out of 40 are incorrect, 40-6= 36 must be correct.
In order to gain percentage you do proportions.
36/40 = x/100.
Multiply 36 times 100 then divide by 40, which is 90.
The answer is 90%.
90% of the questions he got were correct.
7 0
3 years ago
Other questions:
  • What is 0.6144 divided by 1.6
    5·2 answers
  • The weight that a horizontal beam can support varies inversely as the length of the beam. Suppose that a 2-m beam can support 31
    11·2 answers
  • If angle 1 measures 17x and angle 2 measures 19x then what are angle 3 and 4?
    10·2 answers
  • Points H and F lie on circle c What is the length of line segment GH?
    10·2 answers
  • Set up an equation and solve for x
    12·1 answer
  • READ PIC! PLEASE HELP
    6·2 answers
  • Sanjay can travel 342 mi in 6 hours at this rate how far can he travel in 5 hours
    14·1 answer
  • A carpenter’s sketch of a room does not include a scale. She measures a wall that has been built and finds that it is 38.5 ft. l
    7·1 answer
  • Use the scale drawing and the scale factor to enlarge a square that has a side length of 12 in. Scale factor= 3 in:2m.
    12·1 answer
  • Please help. Jdjsjjsdjdidjd
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!