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exis [7]
2 years ago
15

Is -49 a rational number? please explain

Mathematics
1 answer:
aleksklad [387]2 years ago
7 0
Yes, because a rational number is any number that can be expressed as a fraction a/b where a/b are both integers, but cannot be zero.
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3 years ago
Can someone solve this Im to lazy !
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Not impressed that you consider yourself "too lazy" to at least get started on the solution of this problem.  Why not "give it the old college try?"

Start by  choosing letters to represent the unit cost of each popcorn and drink:
p:  popcorn, d:  drink.

Then 2p + 3d = $22.25 and 12p+4d=$39.00
Note that the unit of measurement of all 6 terms here is " $ ".

Solve this system of linear equations simultaneously:

2p + 3d = $22.25
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In your shoes I would mult. the first equation by -6 and then combine the result with the second equation.  p will temporarily disappear, and you'll be left with an equation in d only, enabling you to find the unit cost of a drink.

Come on.  Show your stuff.  You'll need to respond through Comments.


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