Tuesday
December 10, 2013

Posts by yuni

Total # Posts: 26

biology
what is the original color of Phenolphthalein solution? pink or colourless?

math
can any1 plz answer this question.

math
A piece of wire of length 240 cm is bent into the shape of trapezium where the eqtn is = 13x+13x+y+y+24x. Find the value of x and y for which A is maximum, hence find the maximum area. a. express y in term of x b. show that the area A cm^2 enclosed by the wire is given by 2880...

math
the volume of an cylindrical can with a radius r cm and height h cm is 128000 c^3, show that the surface area of the can is A=2(22/7)r^2 + 246000/r. Find the value for r to minimize the surface area. *i know what the quest. ask but i do not know how to apply it.

math
a liquid form of penicillin is sold in bulk at a price of \$ 200 per unit.If the total cost for x unit is C(x)=500000+80x+0.003X^2 and the production capacity is at most 30000 at a specified timed, how many of the penicillin must be manufactured and sold in that time to maximiz...

Chemistry Lab
if i get 4 % of yield in the experiment of chemical reactions of copper and percent yield. Is there a possibility the experiment wa success? ~in my opinion it was success because ou theoritical yield is below 100 % ~i just need some opinion.

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