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1. ### Ratio problems any help is appreciated.?

...2. 13 in 2 hrs. 8x13=104 in 8 hrs. 3. 7 to 4 49/7=7 7x4=28 49 to 28 4. 110.50 in 1 week 25x110.50=2762.50 2762.50 in 25

3 Answers · Science & Mathematics · 09/01/2008

2. ### help with these math problems!! please

I think #4. is B : 49 + 8 = 57 49 - 10 = 39 57 - 39 = 18 For #1. I think that 1 apple = 1/2 pear so I tried to do it & this is how far I got : 5A + 6B = 8B...

6 Answers · Science & Mathematics · 11/08/2008

3. ### Algebra is too hard for me can anyone help me complete it ?

Maan this is loong!! anyway: 1. let x be john 3x be mary so: x + 3x = 140 coins simplify: 4x = 140 divide by 4 x = 35...

1 Answers · Science & Mathematics · 26/08/2007

4. ### algebra---------------?

...7/2. ------- Check work (something John obviously didn't do! :-)... f(x) = -2x^2 + 5x + 7 f(-1) = -2(-1)^2 + 5(-1) + 7 f(-1) = -2(1) - 5...2(7/2)^2 + 5(7/2) + 7 f(7/2) = -2(49/4) + 35/2 + 7 f(7/2) = -49/2 + 35/2 + 14...

3 Answers · Science & Mathematics · 18/03/2013

5. ### How do i solve this? Maths problem?

find 1% of £35 = £0.35 multiply by 40 = £0.35 * 40 = £14 £14 + £35 = £49

4 Answers · Science & Mathematics · 11/10/2009

6. ### Statistic Questions--- I need your help NOW-- Thank you ?

...which is 500. divide it by all (total) which is 1000. So, 500/1000 = 1/2. you do the rest.

1 Answers · Science & Mathematics · 08/09/2008

7. ### Compute the population mean margin of error for a 90% confidence interval when sigma is 7 and the sample size?

...again. mean = 19 standard deviation = 6 at 12, z = (12 - 19)/ 6 = -1.17 or p = 0.1210 at 23, z = (23-19)/6 = 0.67 or p = 0.7486...the sample means if the population’s variance is 49. population: variance = 49 standard deviation = sqrt(s^2) = sqrt(49...

1 Answers · Science & Mathematics · 22/12/2007

8. ### Can someone help me get the solutions to these math problems?

...to get the total rate. Sam can do a job in 4 days, which is 1/4 jobs per day. Lisa can do a job in 6 days, which is 1/6 jobs per day. Tom can...

1 Answers · Science & Mathematics · 07/01/2010

9. ### can you help me with homework?

...1+1/6)x the total of 4200= George+John+Charles or 4200= (1+1/7)(1+1/6)x +(1+1/6)x + x Expand...and you will find the denominator to be 42 .... 4200=49/42 x+ 42/42 x + 56/42 x= 147/42 x x=4200...

6 Answers · Science & Mathematics · 05/11/2008

10. ### Impossible to do?

...then 1/(2pi), and area is 1/(4pi). By the way, you can do this exactly by separating...and this one is about 6.49 * 10^-8, so it is ...don't know what exactly John was doing, but...

5 Answers · Science & Mathematics · 24/05/2008