How did they come up with this answer?

[1-(200/1000)1/10]x100=14.86

the 1/10 looks to be at the top of the )

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- December 2nd 2008, 10:37 AM #1

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- December 2nd 2008, 10:47 AM #2

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- December 2nd 2008, 10:48 AM #3

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do you mean [1 - (200/1000)^1/10] x 100?

If so,

parentheses first, so 200/1000 = 0.2

exponents next, so .2^(1/10) = 0.851339923

next parentheses, so 1 - 0.851339923 = 0.148660077

lastly multiply by 100, so 0.148660077 x 100 = 14.8660077 or 14.87, but I guess they rounded off differently and got 14.86

help?

- December 2nd 2008, 10:48 AM #4

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- December 2nd 2008, 10:51 AM #5

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- December 2nd 2008, 10:51 AM #6

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- December 2nd 2008, 10:52 AM #7
[quote=sethpa8;230458]Please read the rules of this forum.

Bumping is not allowed.

I have already banned you from the chatbox for disregarding the rules, and showing disrespect to authority.

- December 2nd 2008, 11:00 AM #8

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## PEMDAS

I'm just going to add real quick that this problem is just to see if you can correctly use orders of operation. Remember PEMDAS?

Please Excuse My Dear Aunt Sally

P - Parentheses

E - Exponents

M - Multiplication

D - Division

A - Addition

S - Subtraction

Move from left to right in the equation once these have been satisfied