Sunday
December 8, 2013

# Posts by William

Total # Posts: 227

chemistry
How do you calculate the energy released when 1 mole of ethanol, C2H5OH, is burned?

Science
How much would a 75 kg man weigh due to the effect of gravity?

alegrba 2
R(p)=-2.5p^2+600p

arithmetic
Two arithmetic progression have thd same first and last terms.the first arithmetic progression has 21 terms with a common difference of 9.How many terms has the other arithmetic progression if its common difference is 4?working and answer.thans

rock bands often stack their speakers in an array. one teen band has 24 speakers. they stack them at least 2 high, but no taller than 8 high. what are all different arrays they can make?

rock bands often stack their speakers in an array. one teen band has 24 speakers. they stack them at least 2 high, but no taller than 8 high. what are all different arrays they can make?

Andy and William work together to build a toy house. It will take William 5 hours and Andy 4 hours, or William 10 hours and Andy 2 hours to finish their work. If William works alone, how many hours will it take to finish his work? I say 15 is the answer.