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Is 49 a prime number?

Prime numbers up to 100 are easily identifiable if you have memorized the multiplication tables through 12. Any even number, with the exception of the number two, is not a prime number because all even numbers are divisible by two. The next multiplier to be aware of would be three. The number three is prime, but using three as a factor removes the odd numbers nine, 15, 21, 27 and 33 as prime numbers. The number five is prime, but including it as a factor removes all odd numbers that end with a five, and so on.

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What is three-dimensional object?

An example of a three-dimensional object is a cube or pyramid. Both of these objects consist of multiple two-dimensional shapes. Because the shapes are laid out so that they share only one dimension with each other, the combined shape gains an extra dimension to become three-dimensional. People see the world through three dimensions of space because all visible objects are three-dimensional. The only two-dimensional objects are projections created on surfaces.

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How do you get $1.50 with quarters, dimes, nickels and pennies using seven coins?

Using six quarters would create a total of $1.50. With only five quarters, the total would be $1.25. This requires coming up with the additional 25 cents using two coins that are not quarters. The highest value that could be achieved is 20 cents using two dimes, thus the task is impossible. It becomes possible if the half-dollar coin is introduced. The solution is then one half-dollar, three quarters, two dimes and one nickel.

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What are three ways to calculate a dividend payout ratio?

The dividend payout ratio can help determine whether to invest in a company based on how much the company pays out in dividends to its shareholders and how much it decides to retain for its own use. The primary way to determine this is to divide the amount of paid dividends from a given time period by the net income reported by the company during that same time. An alternative formula is to report by a number between 0 and 1, by subtracting the retention ratio from 1. This is a simplified way to assign a numerical value that represents the percentage of net income paid as dividends. Lastly, a ..

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What is judgment sampling?

In judgment sampling, an expert hand-picks units for study according to their perceived usefulness to the research. This method is in contrast to random sampling, in which each member of a population has a known, non-zero chance of being selected as part of the sample.\nFor example, when interviewing manufacturers in the pharmaceutical industry to determine their preferred brand of equipment, the schedules, availability and willingness of the possible subjects are taken into account. Rather than performing random sampling and selecting subjects who are unavailable, an expert employs judgment s..

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How do you make a stem and leaf plot?

List the dataOrganize each data response in a list with identical stem numbers together. The stem number is the first number in each piece of data. Most often, those numbers are listed in ascending order from top to bottom.List the stem numbersList each stem number only once in a vertical line. It does not matter whether the stem number is found several times or only once in the set of data.Write each leaf number to the side of the correct stem numberThe leaf number is the second number or numbers in each piece of data. Write each leaf number next to the appropriate stem number in a horizontal..

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What is a sine bar?

A sine bar is often used with gauge blocks. The sine bar forms the hypotenuse of a right triangle, while the gauge blocks form the opposite side. The height of the gauge blocks is found by multiplying the sine of the desired angle by the length of the sine bar. To find the height for a 13-degree angle, multiply the sine of 13 by five. The result of 1.124 would then be measured using gauge blocks of appropriate thickness.

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How do you estimate your RMD from your 401k?

The life expectancy factor depends on who the beneficiary of the account is and the age of the beneficiary, according to the Internal Revenue Service. The IRS provides three tables to assist a person in determining his life expectancy. A person should use the joint and last survivor table if the beneficiary of his account is a spouse who is 10 years younger than he is. The Uniform Lifetime Table is for accounts where the spouse in not the sole beneficiary and is not more than 10 years younger than the account holder. The single expectancy table is for a person who is the beneficiary of his own..

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What are the factors of 30?

If the only factors for a number are 1 and the number itself, it is considered a prime number. Common factors between two numbers are any factors shared by both of those numbers. The greatest common factor is the biggest of those common factors. There are multiple ways to find the greatest common factor, one of which is to list all the factors of both numbers. Another method is finding the shared prime number factors and multiplying them together. The greatest common factor is useful for simplifying fractions, because dividing the numerator and the denominator by the greatest common factor sim..

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What is 20 percent of 30?

Written out, the formula for calculating 20 percent of 30 is 30 x (20 / 100) = 6. Alternatively, this amount could be expressed as two-tenths of 30, one-fifth of 30 or 0.2 of 30.\nPercentages are a popular way to express fractions because the numbers between zero and 100 are familiar to most people and are easy to say and write. One-hundred is also a straightforward common denominator to use, while fractions that use other denominators can be more complicated to inter-convert and more difficult to understand quickly.

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