A rectangular swimming pool is twice as long as it is wide. A small concrete walkway surrounds the pool. The walkway is a constant 2 feet wide and has an area of 196 square feet. Find the dimensions of the pool.

- on Sat Feb 28, 2009 8:54 pm
- Forum: Geometry
- Topic: rectangular swimming pool is twice as long as it is wide
- Replies:
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**5465**

my picture is like this +--------------+ | |2 |--+--------+ | | | | | |w | | | |--+--------+ | | | 2w | |2 +--------------+ 2 2 so the outside width is w+2+2=w+4 and th elength is 2w+2+2=2w+4 the pool area is 2w2 the whole area is (w+4)(2w+4)=2w2+4w+8w+16=2w2+12w+16 the outside part is 2w2+12w+16-2w...

- on Sun Mar 01, 2009 1:50 am
- Forum: Geometry
- Topic: rectangular swimming pool is twice as long as it is wide
- Replies:
**4** - Views:
**5465**

- on Mon Mar 02, 2009 3:53 pm
- Forum: Geometry
- Topic: rectangular swimming pool is twice as long as it is wide
- Replies:
**4** - Views:
**5465**

how would i do probablty wit a dart board thats R=9in + r=5in. please help i cant figure this out.

- on Sat Mar 07, 2009 6:45 pm
- Forum: Statistics
- Topic: how to do probability with a dart board thats R=9in, r=5in
- Replies:
**2** - Views:
**4295**

i figured it out

- on Wed Mar 11, 2009 12:07 pm
- Forum: Statistics
- Topic: how to do probability with a dart board thats R=9in, r=5in
- Replies:
**2** - Views:
**4295**

The mean score on a certain standardized test is 500, with a standard deviation on 75. Jessie scored in the 75th percentile. What was Jessie's score and the z score?

Please help as soon as possibel. thx

Please help as soon as possibel. thx

- on Wed Mar 18, 2009 2:48 pm
- Forum: Statistics
- Topic: mean score 500, standard dev. 75, score in 75th percentile
- Replies:
**2** - Views:
**2720**

thanks i got it

- on Sat Mar 28, 2009 9:39 pm
- Forum: Statistics
- Topic: mean score 500, standard dev. 75, score in 75th percentile
- Replies:
**2** - Views:
**2720**

find the volume of a bowl with the measurements of 16 ft diameter at the bottom, 20 ft diameter at the top and the bowl is 2 ft high. the slope of the sides of the bowl (their straight, not curved) if you were looking at a cross section of it is 45 degrees. the answer need to be expressed in cubic f...

- on Wed Apr 01, 2009 12:03 am
- Forum: Geometry
- Topic: find the volume of a bowl w measurements of 16 ft diam at
- Replies:
**2** - Views:
**3520**

i figured it out thnx

- on Fri Apr 03, 2009 11:24 pm
- Forum: Geometry
- Topic: find the volume of a bowl w measurements of 16 ft diam at
- Replies:
**2** - Views:
**3520**

Given a normal distribution of values for weight having a mean of 140 Pounds and a standard deviation of 6 pounds, what is the range of weights which would represent the middle 95% of the distribution? (Use the 68-95-99.7 standard deviation rule.)

- on Sun Apr 05, 2009 5:03 pm
- Forum: Statistics
- Topic: what range represents the middle 95% of the distribution?
- Replies:
**4** - Views:
**4103**