4 years ago

Is 12/24 closer to 0, 1/2, 1 1/2, or 2?

Mathematics

2 answers:

TiliK225 [7]4 years ago

7 0

12/24 is exactly 1/2

QveST [7]4 years ago

6 0

12/24 can be reduced to 1/2 so it's closer to 1/2

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3 years ago

Which number is irrational?<br><br> A.0.3 B. C.0.777... D.0.454545…

Savatey [412]

Each of A, C, and D are rational, so presumably B is the answer here.

A is rational, since $10\times0.3=3$ , so $0.3=\dfrac3{10}$ .

C is also rational. If $x=0.777\ldots$ , then $10x=7.777\ldots$ . This would mean $10x-x=9x=7$ , and so $x=\dfrac79$ .

D is rational by a similar argument. If $x=0.4545\ldots$ , then $100x=45.4545\ldots$ . So, $100x-x=99x=45$ , which means $x=\dfrac{45}{99}=\dfrac5{11}$ .