Friday

October 31, 2014

October 31, 2014

Total # Posts: 18

**Statistics**

Assume that the mean hourly cost to operate a commercial airplane follows the normal distribution with a mean of $2,325 per hour and a standard deviation of $240. What is the operating cost for the lowest 5 percent of the airplanes?
*October 9, 2014*

**math**

help to solve problem Many ways one can order the 24 letters of the Greek alphabet
*June 12, 2014*

**math**

A country seen its population grow each year than 1/8 it was last year. At that time the population will have doubled and tripled
*June 10, 2014*

**math**

Help please A bottle containing 10 liters of alcohol one liter of alcohol is removed and replaced with water. After a liter of the mixture was removed and replaced with water, the operation being carried out 7 times in total. Then that amount of alcohol remains in the container.
*June 10, 2014*

**math**

The arithmetic mean of two numbers is 9 and their geometric mean is 3√5. Find these numbers
*June 10, 2014*

**math**

Find the reason for the geometric progression in which a1 = 1, n = 3, S3 = 157
*June 10, 2014*

**math**

The probability that a positive divisor of 60 is greater than 9 can be written as a/b, where a and b are coprime positive integers. What is the value of a+b?
*May 15, 2013*

**math**

Ariel makes a sandwich using four kinds of Italian lunch meat: A, B, C and D and two kinds of Italian cheese: X and Z. Ariel's sandwich has a single layer of each type of meat and a single layer of each kind of cheese, but he also wants to make sure that the two types of ...
*May 15, 2013*

**arithmetic**

determine the secon termof an A.P whose sixth term is 12 and eighth term is 22?
*February 9, 2013*

**chemistry 12**

2Li^++2I^-==>2Li+I2 would 2I^- be oxidised and 2Li be reduced reaction?
*July 24, 2012*

**chemistry 12**

use the standard potential reduction potentials table to balance the following redox equation: H2O2+I-+H+==>H2O+I2 would what i did be correct H2H2+I^-+H^+==>H2O+I2 H2H2+H^+==>H2O And I^-==>I2 Give us H2H2(aq)+2H^+(aq)+2e-==>2H2O(l) And 2I^-(aq) ==> I2(s)+2e...
*July 24, 2012*

**math grade 11**

YES
*April 28, 2012*

**Science**

How many conformations does monosodium glutamate (MSG) have and why?
*April 9, 2012*

**electrical physics**

In Hydrogen atom , if an electron jump from n2 level into n1 level . Prove that the wave number (reciprocal of wave length) of emitted radiation is : 1/λ=me4 /8ε02h3c (1/n22 -1/n12)
*January 24, 2012*

**physical**

What is the electrons velocity that made its momentum equal to the momentum of photon whose wave length 5200A?
*December 28, 2011*

**science**

I can't understand why a ball bounces many time before coming to a rest
*October 5, 2011*

**evaluating**

how do you evaluate (3/4)*-3
*January 14, 2008*

**Grammatical Corrections in my Essay...?**

The mysterious statue One day one guy named Chad he buys a garden a really big garden and he built a cemetery it was the most famous cemetery in all America!! It was really clean, preatty, with so many roses that the entire garden smells to roses they have water fountains ...
*November 10, 2006*

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