Posts by dany
Total # Posts: 26
let A be defined as the set of all two digit integers that are more than 20 and let P be defined as the set of all prime numbers .how many numbers are there that belong to both these sets? 1.13 2.17 3.21 4.25 explain the ans please
July 17, 2016
MATH Please help!
A right triangle has an area of 13^2. The dimensions of the triangle are increased by a scale factor of three. What is the area of the new triangle? a. 39^2 b. 169^2 c. 117^2 d. 142^2 i think the answer is A but i am not sure! any help is appreciated
December 23, 2015
A uniform meter stick of mass 40 g is used to suspend three objects: 15 g at 0.02 m, 40 g at 0.36 m and 35 g at 0.6 m. Where could you place your finger to balance the stick in the horizontal position?
December 9, 2015
Psych 42 (Stats)
A comprehensive study of juvenile delinquency is conducted in every state-run reform school in Canada. A scale called the Antisocial Beliefs Scale is given to all juvenile delinquents. The mean (μ) of the scale is 71 and the standard deviation (σ) is 5. Assuming that...
February 23, 2015
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
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
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
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
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
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