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Rational thinking stems from your pre-frontal cortex.
The number 9.23 is a rational number. A rational number is any number that can be expressed as a fraction of two integers, where the denominator is not zero. In this case, 9.23 can be written as 923/100, which is a fraction of two integers, making it a rational number.
prefrontal cortex -APEX
Yes, for three reasons: 1) it ends after 4 digits, making it a terminating number. 2) If you were referring to ".6222222......", then it is still rational because it has a repeating, predictable pattern. 3) it is equal to (2/3) - (4/90), which is 28/45, a rational fraction
The intersection of integers and rational numbers is the set of integers. Integers are whole numbers that can be positive, negative, or zero, while rational numbers are numbers that can be expressed as a ratio of two integers. Since all integers can be expressed as a ratio of the integer itself and 1, they are a subset of rational numbers, making their intersection the set of integers.