Respuesta :
The number produces an irrational number when multiplied by 0.4 would be C) 3π.
What are irrational numbers?
Irrational numbers are those real numbers that are not rational numbers.
Know that all natural numbers are integers, and all integers are rational numbers. That means natural numbers are not irrational.
π is irrational, and so is 3π
The expression 3π +0.4 is an irrational term as well.
If x is irrational and y is rational, then x + y is the irrational term.
Thus, choice C is the answer.
Learn more about the irrational term;
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