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1. ### How does .9 = 1?

.9 repeating = 1, yes. Since 1/3 = .3 repeating, then 3/3 = .9 repeating. But 3/3 = 1. Therefore, .9 repeating = 1. -John

6 Answers · Science & Mathematics · 24/06/2008

2. ### How do I do this?(b^1/5 · b^9/10)^10?

Hi John Here is what you can do. Step 1: When the expressions inside the..., you add the power (b^(1/5+9/10))^10 (b^11/10)^10 Step 2: ...

2 Answers · Science & Mathematics · 21/06/2011

3. ### Math questions!!1>john ate 1/8 of his dinner .what percent did he eat?....#2 #3?

(1/8)*100% = (100/8)% = 12.5% n²+8n+9 9 sided polygon, 9*2.3 = 20.7 ,.,.,,

3 Answers · Science & Mathematics · 07/04/2009

4. ### how do you solve for x? 3^(3x)= 9^(2x-1)?

3^(3x) = 9^(2x - 1). 3^(3x) = 3^(2(2x - 1)) 3x = 2(2x - 1) 3x = 4x - 2 x = 2. -John

4 Answers · Science & Mathematics · 25/06/2008

5. ### how do I place these in ascending order -2/3, 5/8, 1/8, -1/9. 4/7 ?

In ascending order, we have... -2/3, -1/9, 1/8, 4/7, and 5/8. -John

11 Answers · Science & Mathematics · 23/04/2008

6. ### Word problem I need some help with, first correct gets best answer?

Together they did 1/4 of the work each day. Alone John did 1/9 of the work each day. So Sam's contribution is (1/4) - (1...

3 Answers · Science & Mathematics · 24/12/2007

7. ### Need help with this simple math problem?

sally = 2/9 John = 1/3 Or 3/9 Jeff = 1 - ( 2/9 +3/9) = 4/9 Sally 2/9...

2 Answers · Science & Mathematics · 19/04/2013

8. ### Help me please. Very Important for my project.?

...job) and you get 6/r + 6/(r+9) = 1. Clear out the ...both sides my r(r+9), so 6(r+9) + 6r = r^2 + 9r...6 is extraneous, so r = 9. John does it in 9 hours, ...

2 Answers · Science & Mathematics · 28/02/2013

9. ### im totally clueless?

..., and Peter in 4 hrs. => John can do 1/5 of the work in 1 hour and Peter can do...hour (=60 minutes) 1/5 + 1/4 = (4+5)/20 = 9/20 => 9/20 of the job in 60 minutes...

5 Answers · Science & Mathematics · 17/04/2007

10. ### integral of square root of (1+ (9/4)x)?

sqr (1 + (9/4) * x) = (1 + (9/4) * x)^(1/2) integral of u^(n) = 1 / (u ' * (n + 1)) * u...n = 1/2 n + 1 = 1/2 + 1 = 1/2 + 2/2 = 3/2 <=> integral = 1 / ((9/4) * (3/2)) * ((9/4) * x + 1)^(3/2) + constant <=> integral = 1...

1 Answers · Science & Mathematics · 06/04/2009