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Questions (15)
Determine the rate of change of f(x)=x/x-3 , on the interval -5≤x≤ 8
1 answer
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Determine the instantaneous rate of change of f(x)=x/x-2 , at x=-5
1 answer
268 views
I need a reason the land forms canyons and volcanoes are similar
thank you
0 answers
484 views
Throughout the 1900s, many countries in Africa and Asia gained independence from European colonial powers. India is one of these
3 answers
888 views
An Olympic turkey moving at 20.0 m/s down a 30.0° slope encounters a region of
wet snow and slides 145 m before coming to a
2 answers
1,276 views
Integral of dx/{(x+1)sqrt(x^2+4x+2)} is given as -arcsinh{(x+2)/(xsqrt3)}, but I am not getting it.?
The hint given is 'Put
2 answers
497 views
Book works out integral of sqtr(a^2-x^2)dx as a^2/2*arcsin(x/a)+x/2*sqrt(a^2-x^2) by taking x=a sin theta, and advises to work
2 answers
664 views
Find complete length of curve r=a sin^3(theta/3).
I have gone thus- (theta written as t) r^2= a^2 sin^6 t/3 and (dr/dt)^2=a^2
6 answers
7,189 views
Find circumference of the circle r=2acos theta.
s= Int (0 to 2pi) of Sqrt(4a^2cos^2 theta+4a^2sin^2 theta)d theta =Int (0 to
3 answers
1,096 views
When heated, elemental phosphorus, P4, produces phosphine, PH3, and phosphoric acid, H3PO4. How many grams of phosphine are
3 answers
2,087 views
An experiment makes use of a water manometer attached to a flask. Initially the two columns in the gas manometer are at the same
0 answers
635 views
An experiment makes use of a water manometer attached to a flask. Initially the two columns in the gas manometer are at the same
1 answer
681 views
An experiment makes use of a water manometer attached to a flask. Initially the two columns in the gas manometer are at the same
0 answers
806 views
a solution has gluten concentration of 2000ug/mL at 150uL. if 2uLof that solution is taken out what is the quantity of gluten in
3 answers
382 views
One canned juice drink is 30% orange juice, another is 10% orange juice. How many liters of each should be mixed together in
2 answers
1,423 views
Answers (12)
its b I think
im ot sure what im suposed to do
Thanks for the advice. I checked the problem statment and answer several times and got the same result. I also suspect it to be a print mistake in the book.
Differentiate cost function and equate it to 0, i.e. 0.1(2x)-1.2=0 or x=1.2/0.2=6; Second derivative is0.2which is+ve hence it corresponds to minimum cost level. Hence x=6,i.e. 600 bikes. Cost/bike for 600 bikes will be =0.1x36-1.2x6+4.993=1.393 hunderd $.
30x2+Ax1=(30+A)1.6 60+A=48+1.6A or 0.6A=12 or A=20. Total mix=50oz and cost=30*2+20=80$ Or 80/50=1.6$/oz.
Thank you very much.
Mr. Graham, Thank you very much for elaborate explanation. Kindly also let me know if it is ok to find at what values of theta the r becomes 0 and take that as period of curve? If so, plotting the complete curve every time may not be required.
Thanks a lot for guiding. Kindly let me know if it should be a routine procedure to plot the complete curve everytime or can it be conveniently worked out analytically? I used this formula for integrating Int sin^2x dx=1/2*(x-1/2*sin2x)which is a std
Thanks a lot for guiding,please.
Sorry, slight typo. Please reasd it as Int (0 to 2pi)2a*Int d theta=2a(2pi-0)=4a*pi
no i think we don't need to use 150ul.. can u solve it without using 150ul?
1.30 M = 1.30mols of solute/L of solvent mass of Cacl2 = 1.30 mols CaCl2 x 111g/mol CaCl2(molar mass)= 144.3g of CaCl2 (solute) Solution = 1.11g/ml mass of solution = 1.11g/ml x 1000ml/L x1L = 1110g (solution) mass of solvent = 1110g (solution) - 144.3g
