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3 years ago

Is -2 natural number?

Mathematics

2 answers:

Pachacha [2.7K]3 years ago

8 0

Answer:

No, natural numbers cannot be negative.

Step-by-step explanation:

IgorLugansk [536]3 years ago

3 0

Answer:

yes

Step-by-step explanation:

The natural numbers always include the positive integers, but may or may not include zero depending on the author. Whole numbers can be equivalent to the natural numbers using either definition or can be equivalent to the entire set of integers, again depending on the author

Depending on the mathematician, the natural numbers include: 1, 2, 3, 4, 5, . . . (also called the positive integers), or 0, 1, 2, 3, 4, 5, . . . (also called the nonnegative integers or whole numbers)

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2 years ago

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3 years ago

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3 years ago

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Distance between parallel lines y=3x+10 and y=3x-20

Alecsey [184]

1. Take an arbitrary point that lies on the first line y=3x+10. Let x=0, then y=10 and point has coordinates (0,10).

2. Use formula $d=\dfrac{|Ax_0+By_0+C|}{\sqrt{A^2+B^2}}$ to find the distance from point $(x_0,y_0)$ to the line Ax+By+C=0.

The second line has equation y=3x-20, that is 3x-y-20=0. By the previous formula the distance from the point (0,10) to the line 3x-y-20=0 is:

$d=\dfrac{|3\cdot 0-10-20|}{\sqrt{3^2+(-1)^2}}=\dfrac{30}{\sqrt{10}}=3\sqrt{10}$ .

3. Since lines y=3x+10 and y=3x-20 are parallel, then the distance between these lines are the same as the distance from an arbitrary point from the first line to the second line.

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4 0

2 years ago