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A number that can be written in the form ab where a and b are integers and the denominator is not equal to zero?
Repeating decimal
Is 0.777777777777 a rational number?
Yes, 0.777777777777 is a rational number. A rational number is any number that can be expressed as a ratio of two integers, where the denominator is not equal to zero. In this case, 0.777777777777 can be expressed as 7/9, which is a ratio of two integers. Therefore, it is a rational number.
How would you convince a fellow that the number 0.57 is a rational number?
By demonstrating that it is equivalent to the ratio: 57/100. Any number that can be expressed as the ratio of two integers, the denominator not equal to zero, is rational.
What can the denominator of a rational expression never equal?
It cannot be zero.
Why can't the denominators of rational expressions be zero How can we find the domain of a rational function?
Rational expressions are fractions and are therefore undefined if the denominator is zero; the domain of a rational function is all real numbers except those that make the denominator of the related rational expression equal to 0. If a denominator contains variables, set it equal to zero and solve.
