which of the following CANNOT be a substance? a) table salt, b) air, c) nitrogen, or d) gold?

The answer is b) air.

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Asked 10/3/2012 6:29:41 PM

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example of a numerical expression **Weegy:** Examples of Numerical Expression
The following are some examples of numerical expressions.
4 + 20 – 7, (2 + 3) – 7, (6 × 2) ÷ 20, 5 ÷ (20 × 3), 5 × (4^2 + 3) (More)

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Asked 9/26/2012 1:50:07 PM

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to which set of numbers does square root 51 belong? a) rational numbers, b) irrational numbers, c) integers, or d) natural numbers? **Weegy:** The answer is: b) irrational numbers (More)

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Asked 9/27/2012 12:15:58 PM

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you had $207, but you are spending $2.00 each day. Which algebraic equation models this situation? a) 207+2d, b) 205d, c) 2+207d, or d) 207-2d? **Weegy:** you had $207, but you are spending $2.00 each day. The algebraic equation that models this situation is: d) 207-2d (More)

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Asked 9/28/2012 10:28:51 AM

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Let g(x) be the reflection of f(x) = 3x + 2 in the x-axis. What is a function rule for g(x)? a) g(x) = 3x – 2,
b) g(x) = –3x – 2,
c) g(x) = 3x + 2, or
d) g(x) = –3x + 2 **Weegy:** d) g(x) = –3x + 2
is the answer. (More)

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Asked 10/1/2012 12:49:34 PM

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What is the slope-intercept form of 3x + 2y = 1? **Weegy:** The slope-intercept form of 3x + 2y = 1 is y = -(3/2)x + (1/2) (More)

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Updated 7/9/2014 9:50:03 AM

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