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What is the butterfly effect theory?

The behavior known as the butterfly effect can be seen in simple systems such as a ball placed on the crest of a hill with many different paths. Depending on slight differences in the initial conditions present when the ball is released, the ball may roll into any one of the paths.\nRecurrence is the reason that complex systems, such as the weather, are difficult to predict due to the impossibility to measure the initial conditions of any storm accurately. It is due to this recognition of chaos that weather forecasters run multiple simulations with slightly different initial conditions and fea..

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What is appropriate math for third graders?

Third graders are also required to apply math skills to everyday situations. The abilities to use logic and reason are highly important. Curriculum guidelines for all grade levels are typically set in place by a local governing education agency or school board. The guidelines remain similar across grade levels, but details vary according to the local authority.

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Is 21 a prime number?

The number 21 is what is known as a composite number, which is an integer that is evenly divisible by a positive number other than itself and one. All composite numbers can be broken down into two or more prime factors. Since 7 x 3 = 21, and 7 and 3 are both prime numbers, they are the prime factors of 21. Semiprime numbers are numbers that have only two prime factors, so 21 is a semiprime number.

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How many months is 36 weeks?

For a simpler, yet less precise approach to calculating months from weeks, it may be assumed that there are four weeks in a calendar month. Though this would have 28 days for every month, and most have 30 or 31, it will produce a close estimate without complicated equations. For this example, 36 weeks would be divided by 4 (for the weeks in a month), which equals nine months. This number is higher than the actual calculation, so it is not always reliable, and it should be kept in mind that the actual number of months will be lower than the number found with the casual method.

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What is the difference between a graph and a table?

Tables typically show data in columns and rows. With tables, users can read the data sequentially as they compare individual numbers. Tables allow users to focus on a couple of numbers at a time. These work best for presenting data that uses multiple units of measurement or data that involves exact values. It can be difficult to compare data on tables because they require detailed reading and focus. On the other hand, graphs show patterns, the ups and downs of data, in visual ways, and they also allow users to compare relationships among patterns. Unlike tables, graphs often present data in un..

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Is five a prime number?

Examples of prime numbers include 17, 19, 31 and 37. In math, prime numbers are often compared to composite numbers. Composite numbers have factors more than one and itself. For instance, 22, 48, 60 and 100 are composite numbers.\nThe numbers zero and one are not considered to be either prime or composite. Zero has many factors that can lead to it. The number one’s only factor is itself, which excludes it from being a prime or composite number.

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How do you convert 180 kg to lbs?

Find the conversion rateWhen finding the conversion rate, the easiest process is to set the unit you want to convert to one, as it will simplify the calculation later on. In this case, the unit to be converted is kilograms, and 1 kilogram is equal to 2.2046 pounds.Round the conversion rate if necessaryDepending on how precise you want your answer, you can leave the conversion rate as is or round it to something simpler. In this case, use 2.2046 as the rate or round it to 2.2. In most practical situations, 2.2 is sufficient.Multiply the unit you want to convert by the conversion rateIn this exa..

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What is a three-sided polygon called?

Triangles can be categorized based on the properties of their sides and angles. Equilateral triangles have equal sides and equal angles. Isosceles triangles have two equal sides and two equal angles. Scalene triangles have no equal sides and no equal angles. Triangles can also be categorized based on their inside angle. Right triangles have a 90-degree inside angle. Acute triangles have inside angles of less than 90 degrees, and obtuse triangles have inside angles of greater than 90 degrees.

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What is the square root of 20?

To square a number is to multiply that number by itself. Perfect squares like 25 and 100 are the result of a whole number being multiplied by itself. Most numbers are not the result of a number being multiplied by itself, so taking their square roots does not result in a perfect whole number.\nOne can avoid answering in decimals by breaking a number down into multiplicative factors, one of which is perfect squares. For 20, this is achieved by remembering that the square root of 20 is the same thing as the square root of 4 times the square root of 5. Four is a perfect square that reduces to 2, ..

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How is pi used in the real world?

Pendulum clocks greatly improve the ability to keep time, according to About.com. The pendulum moves in the arc of a circle, with the arm of the pendulum equal to the diameter. Thus, pi figures into adjusting the clock for accuracy.\nStatisticians use pi in solving questions concerning probability. The standard distribution, or bell curve, depends on pi as a constant.\nThe speed at which a professional baseball pitcher throws a ball depends on the length of his arm and pi. The joints in the arm are pivot points and the length of bone is the radius of a circle.\nPi is useful in calculations con..

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