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Which number produces an irrational number when multiplied by 0.4? A. Square root of 9B. 0.444...C. 3 piD. 2/7

Sagot :

Answer:

C. 3π

Explanation:

Let's see what is the result of multiplying 0.4 by each option:

Option A.

0.4 x √9 = 0.4 x 3 = 1.2

Option B

0.4 x 0.444... = 0.177...

Option C

0.4 x 3π = 1.2π

Option D

0.4 x 2/7 = 4/35

The only irrational number is 1.2π, so the answer is:

C. 3π

The other numbers are finite decimals or infinite decimals with repetition or fractions which are rational numbers.

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