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3 years ago

Which of these is an irrational number?

Mathematics

1 answer:

kvasek [131]3 years ago

6 0

Answer:

Step-by-step explanation:

Pi is an irrational number

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If a plane slices a rectangular prism through three points that are equidistant from one of its vertices,which of the following

vagabundo [1.1K]

Answer: An equilateral triangle would be formed.

First, imagine that you have a cube and are looking at one of the corners (vertices). Measure down the three sides from the corner the same distance.

Next, imagine that you take a knife and cut a straight plane through those points. The result of your cross section would be an equilateral triangle.

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4 years ago

three bookcases can hold 810 books. Each bookcase has 5 shelves . each shelf can hold the same number of books. how many books c

Rus_ich [418]

First, let's divide 810 by 3.

810/3= 270

Then we divide 270 by the number of shelves 5.

270/5= 54

The answer is 54.

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3 years ago

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Step-by-step explanation:

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3 years ago

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3 years ago

Read 2 more answers

After reading 80\%80% of her e-mails in her inbox, Danette still has MM unread e-mails.

NARA [144]

Answer: The correct options are.....

A) $\frac{M}{1-0.8}$ and

B) $5M$

Step-by-step explanation:

Suppose, the number of e-mails Danette had in her inbox before she started reading was $X$ .

Percentage of read emails is 80%, so the number of read emails $= (\frac{80}{100}*X)=0.8X$

Thus, the number of unread emails $= X-0.8X=X(1-0.8)$ , which is given as $M$ .

So, the equation will be........

$X(1-0.8)=M\\ \\ \Rightarrow X=\frac{M}{1-0.8} (Answer: 1) \\ \\ \Rightarrow X=\frac{M}{0.2}\\ \\ \Rightarrow X=(\frac{1}{0.2})M=5M (Answer: 2)$

Thus, the expressions which could represent the number of e-mails Danette had in her inbox before she started reading are: $\frac{M}{1-0.8}$ or $5M$

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4 years ago