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5 votes
Which of the following are integers?
a. √-9
b. -81879
c. 8.97
d. -√6

User Abadalyan
by
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1 Answer

4 votes

Final answer:

Among the given options, only b. -81879 is an integer because it's a whole number without any fractional or decimal parts. Options a, c, and d are not integers as they are either imaginary, decimal, or irrational numbers.

Step-by-step explanation:

To determine which of the following are integers, let's examine each option:

  • a. √-9: The square root of a negative number is not a real number, and since integers are a subset of real numbers, this is not an integer. The square root of -9 is an imaginary number.
  • b. -81879: This is a negative whole number without any fractional or decimal parts, so it is indeed an integer.
  • c. 8.97: This is a decimal number, not a whole number, so it is not an integer.
  • d. -√6: The square root of 6 is not a whole number; it's an irrational number. When negated, it remains a non-integer. Therefore, this is not an integer.

The only option that is an integer is b. -81879.

User Edik
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