Thursday
March 5, 2015

Posts by Lux


Total # Posts: 10

math
There is a pretty standard way of doing this sort of problem. Keep it in mind when you encounter this sort of expression. Write sqrt(49x^2+x)-7x=[sqrt(49x^2+x)-7x][sq... =[49x^2+x-49x^2]/[sqrt(49x^2+x)+7x] =x/[sqrt(49x^2+x)+7x] =1/[sqrt(49+1/x)+7]-> 1/14 as x->+infinity...
February 11, 2015

math
When x gets very large, the -x inside the square root is insignificant in comparison to the 4x^6 so can effectively be ignored. The same thing about the 3 on the bottom in comparison to the x^3. The effectively leaves sqrt(4x^6)/x^3 = 2 It is usually a good idea to check with ...
February 11, 2015

reading?
Which part of speech is the underlined word in the sentence? Next, add the eggs to the batter. A. preposition B. adverb C. conjunction D. interjection
February 11, 2015

Social Studies
Thank you so much!
May 11, 2014

Social Studies
*United States
May 11, 2014

Social Studies
Why was the united states interested in claiming the Oregon Country? Is it because they just wanted to expand their land even more?
May 11, 2014

chemistry
A 2.5 g sample of NaOH (Mw = 40.00) was dissolved in water to give a solution of final volume 250 cm3. (i) With reasons, state whether NaOH is a strong or a weak base. Give the conjugate acid of NaOH and decide whether this conjugate acid is acid, alkaline or neutral. (ii) ...
April 21, 2013

Math
A ball is dropped from a height of 36 feet. The quadratic equation d=1/2 gt^2 is used to calculate the distance (d) the ball has fallen after t seconds. The constant g is the acceleration of gravity, 9.8m/s^2. How long does it take the ball to hit the ground? A ball in problem...
November 19, 2012

chemistry
Combustion reactions involve reacting a substance with oxygen. When compounds containing carbon and hydrogen are combusted, carbon dioxide and water are the products. Using the enthalpies of combustion for C4H4 (-2341 kJ/mol), C4H8 (-2766 kJ/mol) and H2 (-286 kJ/mol), ...
December 28, 2010

science( chem)
what is the meaning of "rad" in [OH-]= rad(Kb*cNaA)
July 22, 2007

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