# Math Help - help

1. ## help

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 )

2. Hi

$0.2^{0.1}\;=\;0.8513$

$1-0.2^{0.1}\;=\;0.1486$

$(1-0.2^{0.1})100\;=\;14.86$

These are not equalities but approximations

3. 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?

4. edited

5. Originally Posted by sethpa8
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 )

can someone explain to me
This is just rude. You don't need to restate the question. Two people have tried helping you so try to use their advice.

6. ## ?

Two of us replied, hold your horses!! :P

7. [quote=sethpa8;230458]
Originally Posted by sethpa8
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 )

can someone explain to me
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.

8. ## 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