Math
Refine Search
What type of number has an odd number of factors?
- By Forinfos
- 03/05/2025
- 0 comments
Factors occur in pairs because pairs of factors multiplied together produce the factored number. For example, 12 is produced by multiplying 1 and 12, or 2 and 6, or 3 and 4, so 12 has six different factors. With a perfect square, there is always one factor that produces the number when multiplied by itself. For example, 16 is produced by multiplying 1 and 16, or 2 and 8, or 4 and 4, so there are only five different factors for 16.
How can you create a pie chart online?
- By Forinfos
- 02/05/2025
- 0 comments
Some online chart-making tools are very simple, allowing you to make an easy-to-read graph very quickly. Others allow you to fine-tune details such as the colors of the individual slices, fonts of labels, background color and more. Changing these can make your chart look appealing, but avoid making an attractive chart that is hard to understand. Contrasting colors and simple fonts work well, and since your chart can be updated as you change options, it's easy to experiment. Choose how the slices are labeled, and give your chart a sensible title. Many tools have a 3D option that can give y..
What is an embedded chart?
- By Forinfos
- 02/05/2025
- 0 comments
After embedding an Excel chart in a Word document, any updates made to the original chart are automatically updated in the Word document, provided that the location has not changed. By doing this, the data stays in sync, preventing the chart from having out-of-date or incorrect information. According to the Houston Chronicle, embedded charts work well when one considers the chart and the source data table to be of equal importance.\nAn embedded chart can be removed from Excel without deleting the entire sheet from the workbook. To remove an embedded chart, simply place the cursor on the border..
How do you calculate statistical sample variance?
- By Forinfos
- 02/05/2025
- 0 comments
To find the mean of a data set, add up all the numbers together, and divide the result by the number of points in the data set. For example, the mean of 6, 11 and 8 is 8. After subtracting each data point from the mean, the numbers are squared to eliminate any possible negatives. In the previous example, subtracting each data point from the mean and squaring the number results in 4 + 4 + 0 for a total of 13. This number is then divided by the number of data points in the sample minus one, or in this example, two. The sample variance is therefore 6.5.\nSample variance shows the spread of a set ..
What is the exact value of pi?
- By Forinfos
- 02/05/2025
- 0 comments
Shigeru Kondo, a Japanese systems engineer, and Alexander Yee, a U.S. computer scientist, collaborated to build a special computer that took over a year to calculate pi to the 10 trillionth digit. Extensive calculations of this sort are useful for testing the integrity of supercomputers and highly precise multiplication algorithms, but generally speaking, most scientific applications require no more than 40 decimal places.
What do you call a 20-sided polygon?
- By Forinfos
- 02/05/2025
- 0 comments
Regular icosagons have sides of equal length and identical interior angles, each of which measures 162 degrees. Irregular icosagons on the other hand, have sides and angles of varying lengths. A famous example of an irregular icosagon is a swastika. Although this symbol has become stigmatized in the Western world because of its association with the Nazi Party, it has a long history of use in multiple cultures. For instance, in India swastikas are used to represent prosperity and well-being.
What is a 15-sided shape called?
- By Forinfos
- 01/05/2025
- 0 comments
Formulas exist for creating names of polygons with a large number of sides. For instance, a polygon with 99 sides uses the prefix for 90, "enneacontakai," and the suffix for 9, "enneagon" to get "enneacontakaienneagon." Words for polygons with sides can go into the thousands. For instance, a polygon with 10,000 sides is a myriagon. Nonetheless, many times mathematicians will just use the simplified "34-gon" rather than the more complicated naming system."
What is the square root of 29?
- By Forinfos
- 01/05/2025
- 0 comments
The easiest way to calculate a square root is to use the square root function on a calculator. However, if one does not have a calculator, then one can use Newton's iteration to approximately calculate the square root. This algorithm gives a first estimate for the square root, x1 = 1/2(1 + 29) = 15. One then needs to put this square root back into the formula as follows to calculate a more accurate second estimate, x2 = 1/2(x1 + 29/x1). Repeat this process, repeating x1 with x2 and so on, to get increasingly accurate estimates.
What is the sin of 20 degrees?
- By Forinfos
- 01/05/2025
- 0 comments
The formula for the sine of 20 degrees is written as the square root of 0.46 divided by two. The square root of 0.46 is 0.68, which becomes 0.34 when divided by two. The cosine of a 20 degree angle is 0.93, and the tangent is 0.36. Many calculators contain a key for determining the sine function of an angle.
How is the Pythagorean theorem used today?
- By Forinfos
- 01/05/2025
- 0 comments
The Pythagorean theorem is applicable any time there is a right triangle. When a person knows the length of two sides of a triangle and wants to find the third side, this theorem is used. For example, a person sees an entertainment set at a furniture store and does not have the time to go home and measure his TV set. He knows the measurement of his TV screen and thus calculates the diagonal measurement of the TV space in the entertainment set using the Pythagorean theorem. Through this simple method, he is able to determine whether his TV set fits or not.\nFurthermore, the Pythagorean theorem ..