Question 55816: Could someone please tell me if all the following are correct?
If not which ones do I have wrong? -
Rational numbers are defined to be those which can be expressed as a ratio of integers.
The number pi is an integer.
For all real numbers x, | x | = x.
The number 3i is greater than 2i.
The equation 2 – (3 – 4) = (2 – 3) – 4 illustrates the associative property of subtraction.
Zero is a complex number.
The number 8M is even for all real numbers M.
The number zero is both positive and negative.
The number .1919191919… is a rational number.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Could someone please tell me if all the following are correct?
If not which ones do I have wrong? -
Rational numbers are defined to be those which can be expressed as a ratio of integers. Correct
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The number pi is an integer.
Incorrect
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For all real numbers x, | x | = x.
Incorrect
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The number 3i is greater than 2i.
Incorrect
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The equation 2 – (3 – 4) = (2 – 3) – 4 illustrates the associative property of subtraction.
Incorrect; there is no associative property of subtraction.
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Zero is a complex number.
True
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The number 8M is even for all real numbers M.
False. 8(1/3)=8/3
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The number zero is both positive and negative.
Incorrect; it is neither.
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The number .1919191919… is a rational number.
Correct; every repeating decimal is rational and
every rational number can be written as a repeating
decimal. EX: 3=3.000000.....
Cheers,
Stan H.
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