Friday

January 20, 2017
Total # Posts: 25

**Math**

The error in Steve's answer is that v = 1/2 * y * 8y * 20. The height of the line of the pool bottom is determined by h = 1/8 *l, so the length of the cross section is 8h, not h/8. The correct answer is 1/12 ft^3/min. 1/12 ft^3/min is the selected answer in Varberg Early ...

*March 2, 2012*

**Chemistry**

Rank in order of decreasing average molecular speed at 21 degrees celsius: Ne, HBr, SO2, NF3, CO

*November 2, 2009*

**Chemistry**

1. Calculate the number of molecules in a deep breath of air whose volume is 2.15 L at body temperature, 36 degrees Celsius, and a pressure of 740 torr. 2.A fixed quantity of gas at 24 degrees Celsius exhibits a pressure of 740 torr and occupies a volume of 4.42 L. a)Use Boyle...

*November 2, 2009*

**Geometry**

YES THERE IS SO HOW DID YOU WORK OUT YOUR PROBLEM HOW DID YOU CAME UP WITH THAT ANSWER?

*September 9, 2009*

**Geometry**

Well you see in my math work it ask me to use 3.14 for pie. and the answer that I got was one my choices so I'm assuming that I did it correct

*September 9, 2009*

**Geometry**

Ok so can you please check if I did it correct v=pi*r^2*h v=pi*27^2*3=2187+3.14=6867.18 ft^3 and if I round it of to the nearest tenth it will be 6867.3 ft^3

*September 9, 2009*

**Geometry**

CAN SOME ONE JUST HELP ME HOW TO START IT OF PLEASE.. The foundation for a cylindrical water tank is a cylinder 27 ft in diameter and 3 ft high. How many cubic ft of concrete are needed to build the foundation?

*September 9, 2009*

**Geometry**

thank you

*September 8, 2009*

**Geometry**

Consider the experiment of rolling a single die what is the probability of rolling an odd number? I came up with 0.5,even odds as there are 3 odd and 3 even numbers so the prob. is 0.5 Did I do this correct.

*September 8, 2009*

**Geometry**

So by looking at the website that you emailed me it's congruent correct.

*September 8, 2009*

**Geometry**

Which descriptor could be used to characterize three lines that intersect at the corner of a cube: coplanar, cubic, concurrent, or complementary? A) Coplanar B) Cubic C) Concurrent D) Complementary

*September 8, 2009*

**Geometry**

Yes i'm sorry for the misunderstanding

*September 5, 2009*

**Geometry**

ok so can you check my work if I did it correct 12y-7y-5=0 5y-5=0 y=1

*September 5, 2009*

**Geometry**

I don't know how to start this problem and it goes like this 6y2 = 7y - 5? Can you please help me just to start it off

*September 5, 2009*

**Geometry**

So then the answer is 0 because like you mention there is no factor "correct"

*September 5, 2009*

**Geometry**

Oh,I see thank you I have another one for you that I don't know how to start it and it goes like this 6y2 = 7y - 5? Can you please help me just to start it off

*September 5, 2009*

**Geometry**

Well you see that was how I did at first but I was not too sure about it so then I got it right the first time I always get confused with that any tips to remind me next time. Thanks

*September 5, 2009*

**Geometry**

Solve the quadratic equation. 13) x2 - x = 72 A) -8, 9 B) -8, -9 C) 1, 72 D) 8, 9 Can some one please check my answer and let me know if I did it the right way. x2-x-72=0 (x-9)(x-8)=0 so the answer is D 8,9

*September 5, 2009*

**Geometry**

Find the slope of the line through the given points(4, -8) and (5, -8) A)-16/9 B)0 C)-16 D) No slope b

*September 3, 2009*

**college math**

hmm. so I'm assuming it's C then correct!!

*September 3, 2009*

**Math 156**

The systolic blood pressures of the patients at a hospital are normally distributed with a mean of 136 mm Hg and a standard deviation of 13.4 mm Hg. Find the two blood pressures having these properties: the mean is midway between them and 90% of all blood pressures are between...

*August 7, 2009*

**Elmentary math**

Oh, thanks Mrs. Sue that was really helped me out how to explain it to her. Once again thank you very much :)

*July 29, 2009*

**Elmentary math**

Can someone please help me explaim this question to one of my classmates she asked me this question and I don't know what to tell her. Thanks I am having a tough time grasping odds. I get it confused with probability. Can you explain it to me. Sometimes our teacher and our...

*July 29, 2009*

**Math 156**

can some one please help me...

*July 27, 2009*

**Math 156**

I already did the first and third question I just need some one to make it clear to me what he is asking for question 2. Hint anyone please thanks. What is the difference between a combination and a permutation? What clues are provided in a question to help you decide? Make ...

*July 27, 2009*

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