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Phoenix [80]
3 years ago
5

Is 1/3 a rational number? can rational numbers be negative

Mathematics
1 answer:
Kisachek [45]3 years ago
3 0
1/3 is a rational number and rational number’s can be negative. explanation: a rational number is any number, positive or negative, that can be written as a fraction
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Evaluate 5x²-3(x-2)+x for x=3​
Zepler [3.9K]

Answer:

45

Step-by-step explanation:

Evaluate 5 x^2 - 3 (x - 2) + x where x = 3:

5 x^2 - 3 (x - 2) + x = 5×3^2 - 3 (3 - 2) + 3

3^2 = 9:

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3 - 2 = 1:

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5×9 = 45:

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