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What is data redundancy?

Data redundancy often clutters the database with unneeded information, making the retrieval of the desired info less efficient and swelling the amount of resources needed to search the database. Redundant data can cause inconsistencies, as a particular entry may pick up multiple attributes, causing it to be unusable when looking for any one singular attribute. Over time, redundancies create a database corruption, by making the information within it unusable. Using database normalization can prevent redundancy by creating one singular, efficient table for editing fields, and distributing the in..

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What are indices in mathematics?

Indices explain how many copies of the base number are multiplied. For instance, a base to the second power is referred to as the base squared and indicates that the base is multiplied by itself once. A base with an index of 3 is referred to as base cubed. Exponential phrases are often stated as a number to the power of its index. For instance, 3 to the 5th power.\nThe process of exponentiation is governed by a set of rules known as the laws of indices, or exponent laws. The rules include the concept that any number other than 0 is always equal to 1 if its index or exponent is 0. Another rule ..

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What are some examples of descriptive statistics?

There are two main types of statistics: descriptive and inferential. While descriptive statistics summarize the data, inferential statistics make generalizations about a population from a sample. Several calculations are used to generate inferential statistics, including the t-test and Chi-square, which give information about the probability of the results actually representing the population. These are also known as tests of significance and help researchers determine if the data they obtain is a result of mere chance or if there is an actual relationship between the variables involved. Other..

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What is the integral of an arcsin?

The function arcsin is the same as the inverse of the sine function. The integral of the arcsin function can be found by using the integration technique "integration by parts." Using this technique, u is equal to arcsin(x) and du is equal to one over the square root of one minus x squared.

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How do you make a table of values and plot the equation y = x2 + 1?

Make a T chart and fill in some values for xMake a chart with two columns. Label the left column "x" and the right column "y = 2x + 1." Fill in the left column with values for x such as 4, 2, 0, -2 and -4. Choose any x values.Calculate a y value for each x valuePlug each x value into the equation y = 2x + 1. For instance, for x = 4, the y value is found by multiplying 4 times 2 and adding 1, resulting in a y value of 9. Fill in the y value for all x values on the T chart. Using the set of x-values 4, 2, 0, -2 and -4, the resulting y values are 9, 5, 1, - 3 and -7, respectively.Plot the coordin..

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How can you find answers for Algebra 2 worksheets?

Necessary skills for success in Algebra 2 include an understanding of denominator rationalization, complex numbers, factoring polynomials, and graphing functions.\nThe curriculum features equations and inequalities, graphs, matrices, radical expressions, polynomials, quadratic equations and functions. Other topics covered include exponential and logarithmic expressions, sequences and series, probability and trigonometry. Some schools may teach different topics in their particular curricula.

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What does "equivalent" mean in math?

When talking about two sets, equivalent means both sets have a one-to-one correspondence, meaning one part of a set is paired with a part of the other set. Equivalent shapes in geometry have the same angles, area or volume. A square with sides of 2 feet in length is equivalent to a second square with each side of the same length.

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How do you simplify trigonometric expressions?

Know your anglesEvery time you see sin x or cos x, know that x can be replaced with x-2? or x+2? (if in radians) or x-360 or x+360 (if in degrees) with no change in value. Sine and cosine are periodic functions, meaning that their values repeat every 2? or 360 degrees.\n\nFurther, when you see tan x or cot x, it is periodic with repeating values every ? radians or 180 degrees, so x can be replaced with x+? or x-?, for example, sin 7? = sin 5? = sin 3? = sin ? = 0.Use Pythagorean identitiesWhen some terms are difficult to simplify, using these identities can yield a different result that is mor..

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What is the difference between a factor and a multiple?

The possible multiples of any number are unlimited. For example, the multiples of 5 are all the numbers produced by multiplying 5 by another number, such as 5, 10, 15 or 20, which is an infinite series. While factors must be integers, multiples can be any kind of number. For example, 12(pi) is a multiple of both 12 and pi. A number that has no factors other than one and itself is called a prime number.

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What is the prime factorization of 200?

Prime numbers are numbers that are evenly divisible by only one and themselves. Composite numbers, such as the number 200, have other factors as well. Find two factors of 200, such as 40 x 5. Five is a prime number, but 40 is not. Find two factors of 40, such as 8 x 5. Again, five is prime, but eight is not. Eight equals 4 x 2. Two is prime, but four is a composite equal to 2 x 2. The prime numbers then that multiply together to make 200 are thee twos and two fives.

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