Which number produces a rational number when added to 1/5 ?
2 answers:
By definition, a rational number is:
It is any number that can be represented as the quotient of two whole numbers or, more precisely, an integer and a positive natural.
We have many numbers that added to 1/5 result in a rational number.
For example, we have:
1.4 is a rational number
Answer:
A number produces a rational number when added to 1/5 is:
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A
evaluate f(5) and f(2)
f(5) = 5m + b and f(2) = 2m + b, hence
f(5) - f(2) = 5m + b - 2m - b = 3m
the expression simplifies to
= 2 ( cross- multiply )
3m = 6 ( divide both sides by 3 )
m = 2 → A