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3 years ago

Which number produces an irrational number when multiplied by -1.25

Mathematics

2 answers:

Ira Lisetskai [31]3 years ago

8 0

Answer: Option 'D' is correct.

Step-by-step explanation:

When a rational number is multiplied by rational number , it gives rational number only.

When an irrational number is multiplied by rational number, it gives irrational number always.

Since we need to produce an irrational number .

A. 3/4 is a rational number if we multiply by -1.25 it will remain a rational number.

B. $5.21=\dfrac{521}{100}$ is a rational number if we multiply by -1.25 it will still remain a rational number.

C. $-0.454545=-0.\bar{45}=\dfrac{-45}{99}$ is a rational number if we multiply by -1.25 it will still remain a rational number.

D. square root 17 = √17 is an irrational number if we multiply by -1.25 , it still remain irrational number.

So, Option 'D' is correct.

Snowcat [4.5K]3 years ago

4 0

D. Square root of 17

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3 years ago

The graph of f(x) = 2x3 – 19x2 + 57x – 54 is shown below. How many roots of f(x) are rational numbers

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The root of the function is such point $x_0,$ for which $f(x_0)=0.$

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3 years ago

Read 2 more answers

7/2 inches by 3/2 inches?

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Answer:

5.25 inches or $5 \frac{1}{4}$ inches

Step-by-step explanation:

I believe that the question is what do they multiply to..? If so, we start by making them both in decimal form:

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3 / 2 = 1.5

Now, we multiply:

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3 years ago

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