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kati45 [8]
3 years ago
15

The number 0.8 can be written as 8/10 is it an irrational number

Mathematics
2 answers:
Artemon [7]3 years ago
5 0
Hello there!

0.8 is not irrational

If a number can be written with a perfect fraction, it is rational

Hope I helped!

Let me know if you need anything else!

~ Zoe               <span />
Pie3 years ago
4 0
An irrational number is "a number that cannot be represented by a simple fraction, and usually goes on forever."

8/10 is the same as 0.8 (a terminated decimal) and so it is rational

hope this helps
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A rectangular parking area measuring 5000 ft squared is to be enclosed on three sides using​ chain-link fencing that costs ​$5.5
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Answer:

Dimensions: 75.3778 ft and 66.3325 ft

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Step-by-step explanation:

Let's call the length of the parking area 'x', and the width 'y'.

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From the first equation, we have that y = 5000/x

Using this value in the equation for P, we have:

P = 11*x + 12.5*5000/x = 11*x + 62500/x

To find the minimum of this function, we need to take its derivative and then make it equal to zero:

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x = 250/sqrt(11) = 75.3778 ft

This is the x value that gives the minimum cost.

Now, finding y and P, we have:

x*y = 5000

y = 5000/75.3778 = 66.3325

P = 11*x + 62500/x = $1658.31

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Step-by-step explanation:

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