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
Shtirlitz [24]
2 years ago
13

There are 207 students in 9 classes at east middle school at this rate how many students are in 6 classes

Mathematics
2 answers:
Vikentia [17]2 years ago
6 0

Answer:

138 students

Step-by-step explanation:

patriot [66]2 years ago
4 0

Answer:

138 students

Step-by-step explanation:

207/9 = 23

23*6=138

You might be interested in
A random sample of elementary school children in New York state is to be selected to estimate the proportion p who have received
Anastaziya [24]

Answer:

The minimum sample size required is 461.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

99% confidence level

So \alpha = 0.01, z is the value of Z that has a pvalue of 1 - \frac{0.01}{2} = 0.995, so Z = 2.575.

An interval estimate of the proportion p with a margin of error of 0.06. What is the minimum sample size required?

The minimum sample size required is n, which is found when M = 0.06.

We don't have an estimate for the true proportion, which means that we use \pi = 0.5. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.06 = 2.575\sqrt{\frac{0.5*0.5}{n}}

0.06\sqrt{n} = 2.575*0.5

\sqrt{n} = \frac{2.575*0.5}{0.06}

(\sqrt{n})^2 = (\frac{2.575*0.5}{0.06})^2

n = 460.5

Rounding up

The minimum sample size required is 461.

3 0
2 years ago
In a thunderstorm, the wind velocity in meters per second can be described by the function v(p) = 5.7 √998 - p, where p is the a
nataly862011 [7]

Answer:

923.1927 millibars

Step-by-step explanation:

The wind velocity is given by the function:

v(p)=5.7\sqrt{(998-p}

#We make p the subject of the formula:

v(p)=5.7\sqrt{(998-p}\\\\v=5.7\sqrt{(998-p}\\\\\frac{v}{5.7}=\sqrt{(998-p}\\\\\frac{v^2}{5.7^2}=998-p\\\\p=998-\frac{v^2}{5.7^2}

#Substitute the given values in the function above to solve for p;

p=998-\frac{v^2}{5.7^2}\\\\=998-\frac{49.3^2}{5.7^2}\\\\=923.1927\ millibars

Hence, the air pressure is 923.1927 millibars.

7 0
2 years ago
Jemina flips a disc of the type shown below: A disc with two layers is shown. The top layer is shaded in a darker shade of gray,
Yakvenalex [24]
The probability is just 1/2 that the disc will result with the white side landing up.

There are two sides to the disc. If they are equally likely to happen, then the chance of either side is 1/2. It does not matter which number the flip is.
6 0
3 years ago
You make a scale drawing of a garden plot using the scale 2 in. 517 ft. If the length of a row of vegetables on the drawing is 3
sladkih [1.3K]
The answer would be B- 25.5
5 0
2 years ago
Need help!<br><br> Will Mark brainlist. Please do not spam and explain your answer.
Virty [35]
You cannot factor it any further as it is in its simplest factored form. There is no common factor in either the term (25x^2) or (9y^2) that you can pull out so it cannot be simplified. Hope this helps
4 0
3 years ago
Other questions:
  • Which of the following is an example of perpendicular lines?
    14·2 answers
  • Dina and Masha started out on a 20 miles bike path at the same time. When Dina reached the end of the 20 miles, Masha still had
    13·2 answers
  • Suppose an electronics manufacturer takes a sample of 5000 devices produced by an assembly line. Each device is inspected or tes
    12·1 answer
  • Renee, her two brothers, and her two sisters combine their money together to buy their parents a gift for the holiday season. Th
    8·1 answer
  • (10 points!!!) LITERALLY NEED HELP LIKE RIGHT NOWWW!
    14·1 answer
  • If the Standard Deviation was 3 and the average was 52, between what 2 values would contain
    13·1 answer
  • Emily has saved $74 toward a new sound system that costs $149. She plans on saving an additional $15 each week. How many weeks w
    13·2 answers
  • Quadrilateral WXYZ is dilated by a scale factor of į to form quadrilateral W'X'Y'Z'. What is the measure of side ZW? Z 28 Y" 42
    7·1 answer
  • –2} -(-5) = 0<br> -<br> Can someone please help me
    10·1 answer
  • Please assist with following question 2, 7, 9, 10, 13
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!