Tuesday
August 30, 2016

Posts by walter

Total # Posts: 121

arithmetic math
For each of the following expressions, show each step a student would folow to mentally perform the calculations in the whole numbers. For each step, identify the law, definition , axiom ec that was used to roduce that step. 345+641+255+359
January 25, 2009

basic math
say i have something like (2/3)-(1/3) ---------------- 3 do i multiply the top this way (1/3)(3/1) by flipping the denominator or multiply it like this (1/3)(1/3)
May 15, 2008

trig
Work out the following identities a)sin pheta / cos pheta b)tan pheta cos pheta
April 8, 2008

trig
If a = 5 cm and b = 3cm, use the Pythagorean Theorem to find c
April 8, 2008

chemistry
Given the equilibrium system PCl5(g) <---> PCl3(g) + Cl2(g) K = 12.5 at 60 degrees Celsius. A 1.0-L reaction vessel is analyzed and found to contain 3.2 mol Cl2(g), 1.5 mol PCL3(g) and 3.0 mol PCl5(g). Show that the reaction mixture has not yet reached equilibrium
April 8, 2008

Accounting question..
Having trouble figuring out how to do this problem for my accounting homework.. any help would be greatly appreciated..the information given goes as follows.. On 1/1/08 you issue $400,000 of 7%, 10 year bonds that pay intrest semiannually. The Market intrest rate is 8% The ...
November 27, 2007

maths
solve for x 8=6^x using logs
November 12, 2007

maths
solve for x
November 12, 2007

maths
solve the following equation for x
November 12, 2007

algebra
can you show how to solve for x x+1/x + 6/2x-3 =0
November 1, 2007

maths
factorise the following equation 680x3-1407x2-614x+285 where x2 x3 mean x to the power of
October 26, 2007

maths
solve the following equation for x (x+1/x) + (6/2x-3)=0
October 23, 2007

maths
rearrange the following equation to find x in terms of y and t y(y-x)=3t(3t+x)
October 23, 2007

algebra
solve the following simultaneous equation algebraically,for a and b 8a+5b=23 12a+3b=12
October 23, 2007

chemistry
if you added sulfuric acid to calcium nitrate what products in addition to calcium sulphate would you get if any ? if you start with calcium nitrate mixed into H2SO4 (aq), wouldn't you get a solution of nitric acid? H2SO4 + Ca(NO3)2 >>> 2 HNO3(aq) + CaSO4(s)
August 13, 2007

chemistry
write a balanced chemical equation for calcium nitate plus sulfuric acid produces calcium sulphate and ? This is a metathetical reaction, I think more properly called a double displacement reaction now. Just change + and - partners. Ca(NO3)2 + H2SO4 ==> CaSO4 + HNO3. I will...
August 9, 2007

chemistry
Given a solution in moles per litre how would you convert to parts per million)ppm.) could you help,no other information given apart from solution contains a known concentation of aluminium mols/L. Convert mols to grams. That will be grams per 1000 mL. Convert that to mg/L. ...
August 9, 2007

chemistry
calcium nitrate + sulfuric acid =caso4+? write a balanced chemical equation for this reaction including states. Ca(NO3)2 + H2SO4 ==> CaSO4 + 2HNO3 You don't have enough information to provide states. CaSO4 will be a solid so you write CaSO4(s). H2SO4 will be (l) if it ...
July 30, 2007

chemistry
write a balanced chemical equation for the following reaction including states not complete; no question.
July 30, 2007

Math
Show me how to solve problems like this. 1.) 7 + (-9) + (-5) + 6 2.) [(-3)(-4)(-5)]/ (-2)(-3)] Try reading the following sites' pages very carefully. Then make an attempt at doing the problem, and we'll see if you got it right: http://www.jiskha.com/mathematics/algebra...
June 6, 2007

math proportions
17/32 = x/100 1700 = 32x x= 53 1/8 Am I right? yep
February 25, 2007

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