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Travka [436]
3 years ago
5

How do you write the sum of 7 times a number is equal to 9

Mathematics
1 answer:
77julia77 [94]3 years ago
6 0

answer:

7n = 9

work:

<em>note: i'm going to assume you didn't mean sum since sum is addition.</em>

let's analyze the question:

7 times a number

so, we have 7n

is equal to 9

so, 7n is equal to 9.

you can write this as: 7n = 9.

hope this helps, have a great day!

- Eviezoom <3

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As an aid to the establishment of personnel requirements, the director of a hospital wishes to estimate the mean number of peopl
GenaCL600 [577]

Answer:

n = 66.564

Step-by-step explanation:

  1. Because the population is unknown, we will apply the following formula to find the sample size:

n= (\frac{zS}{E} )^{2}

Where:

z = confidence level score.

S = standard deviation.

E = error range.

   2. We will find each of these three data and replace them in the formula.

"z" theoretically is a value that measures how many standard deviations an element has to the mean. For each confidence level there is an associated z value. In the question, this level is 99%, which is equivalent to a z value of 2.58. To find this figure it is not necessary to follow any mathematical procedure, it is enough to make use of a z-score table, which shows the values ​​for any confidence interval.

The standard deviation is already provided by the question, it is S = 100.

Finally, "E" is the acceptable limit of sampling error. In the example, we can find this data. Let us note that in the end it says that the director wishes to estimate the mean number of admissions to within 1 admission, this means that she is willing to tolerate a miscalculation of just 1 admission.

Once this data is identified, we replace in the formula:

n=(\frac{(2.58)(100)}{1} )^{2}

    3. The corresponding mathematical operations are developed:

n=(\frac{258}{1} )^{2}

n= (258)^{2}

n= 66.564

4 0
3 years ago
Pythagorean Brotherhood was a secret society but a little is known about it. Suggest principles of their education. Discuss the
yan [13]

Answer:

They use Phylosophy as a means of Spiritual cleansing.

The Pythagorean theorem.

The Demand that members must live in strict secrecy and loyalty.

The appeal to certain symbols like Tetraktys etc.

They believe the soul is destined for heaven,where it will United with the Divine.

They believe that reality including music and astronomy when at their repeat level are Mathematical in nature.

Step-by-step explanation: The Pythagorean brotherhood is believed to have originated from Sounthern Italian city known as Croton. It was started by a man called Pythagoras from Samos Greece, he is a controversial phylosopher.

The Pythagorean brotherhood formulated one the most widely used Theorems in Geometry which states that THE SQUARE OF THE HYPTHEMUS OF A RIGHT ANGLED TRIANGLE IS EQUAL TO THE SQUARE OF THE OPPOSITE AND THE BASE.

6 0
4 years ago
Ellas book bag contains 10 markers: 6 red, 3 blue, and 1 orange what is the ratio of blue markers to the total number of markers
ale4655 [162]

Answer:

3:10

Step-by-step explanation:

We have to do blue markers: total markers

Just plug those values in

3 blue markers: 10 total markers

remove the labels

3:10

Let me know if you have any questions

6 0
3 years ago
Read 2 more answers
Circle o is shown below the diagram is not drawn to scale if m
Vadim26 [7]

Answer:

∠ O = 72°

Step-by-step explanation:

the inscribed angle R is half the measure of its intercepted arc NQ , then

arc NQ = 2 × 36° = 72°

the central angle O is equal to the measure of the arc that subtends it , so

∠ O = arc NQ = 72°

7 0
2 years ago
Can someone help with this, please? :)
Sladkaya [172]

Answer:

answer is D i believe

Step-by-step explanation:

8 0
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