3 can be expressed as a fraction, so it is a rational number.
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-3 can be written as the ratio of integers, like -3 to 1, or 21 to -7, or -792 to 264,
and since it can be written as the ratio of integers, it is a rational number, by definition.
Yes. -3 is both rational and real. -3 is an integer. All integers are rational numbers. All rational numbers are real numbers. Thus -3 is a rational number and a real number.
No. 3 = 3/1 which is of the form a/b (with a & b integers) which is a rational number
-3 is a rational number
Yes, -3 is both a rational number and an integer.
Yes, 3.4 is a rational number between 3 and 4: 3.4 is between 3 and 4, and 3.4 = 34/10 = 17/5 which is a rational number. The rational number midway between 3 and 4 is 3.5