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October 20, 2014

October 20, 2014

Posted by **Alicia** on Thursday, March 24, 2011 at 3:17pm.

Indicate whether each of the following statements is true or false. If the statement is false, explain why it is false.

a) 3/4EQ

b) the square root -31 ER

c) 0EI

d) -2EW

- Grade 12 Data Management math -
**MathMate**, Sunday, March 27, 2011 at 9:51amI will translate and let you make the attempts:

a) ℚ is the set of rational numbers, which can be obtained as the quotient of two integers. This includes fractions, decimal numbers (repeating or not), and all integers.

So

(3/4) ∈ ℚ

is true or not?

b) ℝ is the set of real numbers,. It includes all rational numbers (ℚ), integers (ℤ) and all other numbers that are not complex, such as √(2), π, etc.

So

√(-1) ∈ ℝ

c) I do not know what I represents. The usual symbol for integers is ℤ, or ℕ for natural numbers, which are non-negative integers. If your book defines integers as I, the equivalent question would be:

0 ∈ ℤ

d) Natural numbers are non-negative integers.

I do not know what W stands for. Look carefully to see if it is not actually a fancy N, as in ℕ. So is the following statement true?

-2 ∈ ℕ

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