You have completed ALGEBRA for Middle Grades.
The number of correct answers %%SCORE%%.
The number of wrong answers %%WRONG_ANSWERS%%.
Total number of questions %%TOTAL%%.
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Question 20

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Ассоциативное свойство умножения

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Коммутативное свойство умножения

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Распределительное свойство умножения над добавлением

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Question 21

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In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x^{−1}, is a number which when multiplied by x yields the multiplicative identity, 1.

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The multiplicative inverse of a fraction a/b is b/a.

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For the multiplicative inverse of a real number, divide 1 by the number. For example, the reciprocal of 5 is one fifth (1/5 or 0.2), and the reciprocal of 0.25 is 1 divided by 0.25, or 4.

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The reciprocal function, the function f(x) that maps x to 1/x, is one of the simplest examples of a function which is its own inverse (an involution).

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