Number of results: 1,284
i just need help with factorials I assume you know what a factorial is: 1! = 1 2! = 1x2 = 2 3! = 1x2x3 = 6 N! = 1x2x3x...x(N-1)xN They occur often in probability theory. Please ask a more specific question about factorials. I have no idea what else to tell you. what is the ...
Wednesday, August 31, 2005 at 6:00pm by tiffanie robinson
How can I figure the number of days from one date to another? Example: How many days are from June 21 to Sept. 23? I need to do this without using a calendar. The first thing you need to know is the number of days in each month. If you don't know this little rhyme, I urge you ...
Friday, September 2, 2005 at 12:45pm by Phillip
I REALLY NEED HELP ON THIS--IM SO LOST.
SOMEONE PLEASE HELP ME :( I AM SO LOST. I HAVE READ MY BOOK AND STILL CONFUSED. I HAVE TWO PROBLEMS BELOW AND EACH HAS ONE PART. THERE ARE SEVERAL MORE BUT I DON'T WANT TO ASK FOR TOO MUCH. PLEASE HELP ME ON THESE TWO. MY TEACHER SAID IT IS SIMPLE AND THAT IS WHY HE WON'T BE ...
Thursday, June 15, 2006 at 5:35am by Manny
I need help with the following problem: A brighe hand is made up of the 13 cards from a deck of 52. What is the probability of a hand chosen at random containing 6 of one suit, 5 off another, and 2 of another? THe first card can be anything. It seems to me that the probabality...
Monday, June 19, 2006 at 10:07pm by D
Can anyone solve the following problem. its a case study format our instructor gave to us. i was able to part one and construct a supply curve. just confused on the remaining parts...... Jerry Dewbre, owner of Dewbre Petroleum, had been very busy over the past 18 months. ...
Tuesday, July 4, 2006 at 5:11pm by Joe
Does anyone wish to discuss the Coriolis effect/force? Mike http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/fw/crls.rxml The thing I find teasing about the coriolis effect is that the faster the wind or an object is travelling the greater the deflection. Take the N Hemisphere, ...
Monday, August 21, 2006 at 4:32am by mike
I am assuming this is a 1,000g mixture. 42% H3BO3 = 420g H3BO3/(420g H3BO3+580g H2O)= 0.42 by mass. 420g H3BO3/(420g H3BO3+580g H2O+Xg H2O)= 0.06 Solve for X Check my thinking. Check my work. There is an alternative approach. You want to dilute it by a factor of seven. (42 to ...
Sunday, October 29, 2006 at 9:52pm by DrBob222
The differences in chemical properties of the two molecules, with the same formula, are due to the different ways the atoms are arranged in the molecule. As for recording the data, plot both results on a CO2 vs time scale, with the same coordinate scales. The dextrose data ...
Saturday, September 29, 2007 at 11:05am by drwls
just throwing out a number because i'm bored: 55.8741 was what i got. I'm no chemist, but i wanted to take a shot at it and now i'm curious how close the real answer is to mine.
Monday, August 29, 2011 at 9:15pm by Kevin
I would suggest finding the 100% mass of each of the isotopes, adding those, then dividing by 4 I will find the 100% mass for the first one: if 5.85% has a mass of 53.93961, then 100% has a mass of 53.93961/5.85*100 or 922.0446154 I could be way off base here, perhaps a ...
Monday, August 29, 2011 at 9:15pm by Reiny
Monday, August 29, 2011 at 9:15pm by TutorCat
i got 56.2amu but it was wrong. i don't know how to find the average amu?
Monday, August 29, 2011 at 9:15pm by Alison
A certain element has four isotopes. 5.85% of has a mass of 53.93961 . 91.8% of has a mass of 55.934939 . 2.12% of has a mass of 56.93539 . 0.282% of has a mass of 57.93328 . What is the average atomic mass of element ? Express your answer numerically to three significant ...
Monday, August 29, 2011 at 9:15pm by Alison
The second equation gives the delta H for the REACTION as it is written from reactants producing products. The numbers one uses comes from tables which have been prepared from experimentally measured HEATS OF FORMATION (or calculated from different heats of formation using ...
Monday, April 5, 2010 at 11:09pm by DrBob222
I am taking a job related test consisting of several math sections. I have been out of school for quite some time and am looking to find the easiest place to get tips and tutorials to solve these questions. The topics are as follows: multiplication and division of fractions ...
Saturday, September 3, 2011 at 12:13am by jay
i am taking a job related test with many math sections. I am long out of school and need some tutorials as well as practice questions and answers. The topics are as follows: -multiplication and division of fractions and mixed numbers -calculating percentages -calculating ...
Saturday, September 3, 2011 at 3:20am by jay
For Calculating Percentages: You can for example change 4.89 to .00489 % by moving the decimal two places. or for science we usually divide the part of mass/ the whole and times it by 100 to get percentages. Calculating ratios: you can set up a proportion by.. x/30 = 1/3 and ...
Saturday, September 3, 2011 at 12:13am by ALISON
Monday, August 29, 2011 at 9:15pm by A
Calculating Chi Squared
I did a biology experiment and I have to use the chi^2 method to calculate statistical significance. I got data at different time points and I just want to make sure what I'm calculating this right. The data I got for one time point are 6 and 23 I know the equation for chi^2 ...
Friday, October 28, 2011 at 7:06pm by Catherine
calculating the range of 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 Is the range 16-0 =16
Thursday, April 4, 2013 at 9:11pm by luckybee