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## #1 2013-08-12 19:30:23

EbenezerSon
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### Standard Form.

Simplify the following, leaving your answer in standard form.

I have solved it but had different solution  from what the book has, I need some assistance.

1) 0.81 * 10^-5/2.25 * 10

2). 0.0048 * 0.81 * 10^-7/ 0.027 * 0.04 * 10^6

Both number one and two are in a  'square root sign'

Please, I would be much obliged if you produce your steps here.

Thanks in advance.

## #2 2013-08-12 19:35:48

bobbym
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### Re: Standard Form.

What were your answers?

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #3 2013-08-12 19:58:29

EbenezerSon
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### Re: Standard Form.

1). I had 6.0 * 10^-15

And

2). I had, 6.0 * 10^-9.

Last edited by EbenezerSon (2013-08-12 20:09:07)

## #4 2013-08-12 20:13:50

bobbym
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### Re: Standard Form.

Okay, 1) looks like this?

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #5 2013-08-12 20:19:21

EbenezerSon
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### Re: Standard Form.

Yes. But all are in a square root.

Sorry! the denominator is 2.25 * 10^7

Forgive me.

## #6 2013-08-12 20:23:50

bobbym
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### Re: Standard Form.

So we have:

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

EbenezerSon
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Right!

## #8 2013-08-12 20:34:58

bobbym
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### Re: Standard Form.

You were close I am getting 6 x 10^-7

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #9 2013-08-12 20:41:58

EbenezerSon
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### Re: Standard Form.

Please can you provide the steps?

Thanks.

## #10 2013-08-12 20:45:39

bobbym
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### Re: Standard Form.

Do it by pieces, what is

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #11 2013-08-12 20:52:51

EbenezerSon
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### Re: Standard Form.

= 10^(-5-7)=10^-12.

## #12 2013-08-12 20:55:35

bobbym
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### Re: Standard Form.

Very good.

Now what is .81 / 2.25?

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

EbenezerSon
Full Member

Offline

= 0.36 *10^0

## #14 2013-08-12 21:08:40

bobbym
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### Re: Standard Form.

Leave out the 10^0, it is 1. We do not show multiplication by 1.

Now combine the two answers.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #15 2013-08-12 21:18:05

EbenezerSon
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### Re: Standard Form.

0.36 *  10-12
= 0.6 * 10^-6
= 6.0 * 10^-7

It looks I was confused by the root.

## #16 2013-08-12 21:23:28

bobbym
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### Re: Standard Form.

Very good. It is awful making a human being do such calculations. We have machinery for that nowadays.

Is this 2)?

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #17 2013-08-12 21:43:30

EbenezerSon
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### Re: Standard Form.

Yes, Bobbym.

I just want to become used to them, cos in no time I will be teaching others.

Now, I had the same answer for the second question.

I owe you some thanks. :-)

## #18 2013-08-12 21:52:10

bobbym
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### Re: Standard Form.

That book has a sense of humor at least. I am getting the same answer as 1).

I owe you some thanks. :-)

No thanks required.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #19 2013-08-12 22:14:32

EbenezerSon
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### Re: Standard Form.

Yes I tried to solve it once again and now I have the same answer as the first one, The root was my main problem, but now I have known how to go about that.

Thank you very much Bobbym.

God bless you!

## #20 2013-08-12 22:16:50

bobbym
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### Re: Standard Form.

Hi;

You are welcome. I am going to take a break, see you in a bit.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

## #21 2013-08-12 22:25:15

EbenezerSon
Full Member

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### Re: Standard Form.

Okay.

I will return getting to nÄ±ght time.

## #22 2013-08-13 00:53:43

bobbym
Administrator

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### Re: Standard Form.

Hi;

Sorry for the delay but I needed an hour or so nap.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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