Crossing out Units in Unit Analysis?
814688
k, your questuons are hard to understand but I'll try and help\n\nUnit conversions are simple, you write them out like fractions, impossible on a computer screen normally...but maybe like this\n\nExample: convert 12 ft/sec into meters.\n\n(12 feet)        (1 meter)\n------------    ---------      = 3.657  meters per sec\n(second)       (3.28 feet)\n\nthe feet cancel\n\nSo basically you multiplied it by 1, because the numerator and denominator are the same thing, 12 times 1, but with different units.
210386
I think the point may be to use synthetic division.  Look that up in your text.
991856
It is called WRONG. If A is much larger than B, then A+B/A is about A unless you meant (A+B)/A, in which case the result is about 1. In neither case do you get A/B.
782057
look at a few examples and it will make sense\n\nfor example \n\n02 (where the 2 is small)   -> _ O    (the _ is where a number goes)  (2)
910270
How many units does the 2.492 consist of? What you would need to do is take the total number of units you have already \n\nYou need to do a weighted average. So, say for example the 2.492 is 100 units, this semester you get a 3.0 with 14 units and the same for Spring. That would be a total of 128. The first 2.492 would consist of 78.12% (which is 100 units (my estimate) divided by the total of 128 (which you would have based on my estimate and 14 units in the spring and the fall), this semester would be 10.9% at 3.0 and 10.9% at 3.0 for Spring. Then multiply like this:\n\n(78.125% * 2.492) + (10.9375% * 3.0) + (10.9375% * 3.0) = 2.60\n\nIf you already have 80 units - it would look like this:\n\n(74.074% * 2.492) + (12.963% * 3.0) + (12.963% * 3.0) = 2.623\n\nand if it turns out that you get a 3.2 this quarter and Spring quarter:\n\n(74.074% * 2.492) + (12.963% * 3.2) + (12.963% * 3.2) = 2.67\n\nHope this helps. I will check later to see if you added more information.\n\nOKAY - with the additional information - here is where you are:\n\nCurrently 88 units at 2.492 - if you get a 3.0 with 14 units this qtr. and 3.2 with 16 units in Spring you will have a 3.648. If Spring is a 3.0 you will have a 2.62. \n\nIf you got a 3.5 this qtr and next - you would end up with a 3.748. If you got a 3.0 this qtr and a 4.0 in Spring - you would end up with a 2.7567. It is possible - but would take a lot of work...\n\nGood Luck and I hope that clears it up.
667393
yup your answers are correct.\n\nhowever your units are not, length and width are measured in yards not sq yards.
1147102
pi*(r^2)\n\nIt doesn't matter which unit you use, just make sure you're consistent.
1073519
If you want to compute confidence intervals in this case, you will want to do a multiple regression. \n\nYou cannot combine confidence intervals in general anyway, but espcially since both variables have different units, it doesn't make sense to do, say, a two sample confidence interval.
869966
http://www.math.psu.edu/tseng/class/Math140H/Sqrti.html\n\nAnd, BTW, i (or j) is not a 'complex' operator.  It is the 'imaginary unit' ☺\n\n\nDoug
1154622
a variable quantity that can be resolved into components
904752
here's a link, page down and see if you can follow the steps. :\ngood luck.\n\nhttp://cstl.syr.edu/fipse/Algebra/Unit2/expo.htm
973666
I've seen one variant that goes like this:\nLet a and b be equal non-zero quantities\n\n          a = b\n\nMultiply through by a\n\n          a2 = ab\n\nSubtract b2\n\n          a2 − b2 = ab − b2\n\nFactorize both sides\n\n          (a − b)(a + b) = b(a − b)\n\nDivide out (a − b)\n\n          a + b = b\n\nObserving that a = b\n\n          b + b = b\n\nCombine like terms on the left\n\n          2b = b\n\nDivide by the non-zero b\n\n          2 = 1\n\nQ.E.D.\n\nThe problem here is that dividing by (a-b) is dividing by zero, which is an undefined operation.
149472
Hey I'm studying physical and chemical equilibrium too, currently.The answer is that it will definitely have units when the concentrations have different powers.Just try and work it out with the units and it will be very clear.
531852
you have to use instinct, there is no clear rules that states what the expressions must look like (except if the problem insist you on giving the answer in a specific form). \n\nPerhaps one of the guidelines is make variables that have same indices grouped into one. So x + 3x becomes 4x, group them out don't leave them straying.
775593
Load the Analysis Toolpak add-in and then use this formula, it's shorter:\n\n=A1/GCD(A1, B1)&":"&B1/GCD(A1, B1)
473554
You have to use integration by parts.\nLet u = ln(x) and dv = dx, then\ndu = (1/x)dx and v = x\nint(udv) = uv - int(vdu)\n= xln(x) - int(x(1/x)dx)\n= xln(x) - int(dx)\n= xln(x) - x + C, where C is a constant
880121
Yes, you need to convert relative standard derivation to standard derivation first. Use relative standard derivation times the mean.\n\nIn the question, I didnt see anything about number of measurements, so there's no way we can tell n. Since we dont know the number of measurements, we cant tell which distribution, Students' T  or normal distribution, we should use. Look into the questions again, with this much info, we cant do nothing here.