Thursday
December 18, 2014

Posts by Cecelia


Total # Posts: 20

math
In a problem on percentages there are three quantities that are involved. These are the base, the amount, and the rate percent. Express the relation between them in the form of an equation and explain with examples how to find each one of them given the other two quantities
October 19, 2012

math
In a problem on percentages there are three quantities that are involved. These are the base, the amount, and the rate percent. Express the relation between them in the form of an equation and explain with examples how to find each one of them given the other two quantities
October 19, 2012

intermediate algebra
0.3x + 0.2y=5, 0.5x + 0.4y=11 using the substitution method
December 28, 2011

Chemistry
A 36.0mL sample of 1.20 M KBr and a 56.0mL sample of 0.700 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 60.0mL. What is the molarity of the KBr in the final solution?
October 4, 2011

Chemistry
A 36.0mL sample of 1.20 M KBr and a 56.0mL sample of 0.700 M KBr are mixed. The solution is then heated to evaporate water until the total volume is 60.0mL. What is the molarity of the KBr in the final solution?
October 4, 2011

chemistry
The mass percentage of chloride ion in a 29.00 sample of seawater was determined by titrating the sample with silver nitrate, precipitating silver chloride. It took 42.42 of 0.2998 silver nitrate solution to reach the equivalence point in the titration.
October 4, 2011

Math
Multiply whole number by denominator and add numerator. Put this number as numerator with original denominator. For example: 9 2/11 would be 9*11 which is 99 add that to 2, which gives you 101. SO final answer is 101/11. 1 7/15= (15*1) + 7=22 SO 22/15
October 4, 2011

Introductory Physics
I am really nervous about mathematics, so I just want to make sure I am doing these problems correctly. I figure if I am getting the incorrect answer, I must be doing them incorrectly and need to work on them some more. I THINK I have them correct, but I just want to verify. ...
March 30, 2011

Math115
Solve by the elimination method. 5x-15y=2 and 5x-15y =3 Is there a solution of an ordered pair? Are the infinitely many solutions? or is there no solution? I got that there is no solution.
January 23, 2010

maths
use the quotient rule to differentiate the following k(t)=e^3t/4-t^2 (-2<t<2)
March 5, 2008

maths
find the stationary points of the following f(x)=x^3-3x^2-24x-7
March 5, 2008

maths
finf the definite integral of the following h(u)=cos^2(1/8*u) (8th*u)
March 5, 2008

maths
find the indefinite integral of the following g(x)=21-12x^3/x (x>0)
March 5, 2008

maths
find the indefinite integral of the following f(t)=6cos(3t)+5e^-10t
March 5, 2008

maths
find the y coordinates of each stationary points f(0). f(x)=x^3-3x^2-24x-7
February 12, 2008

maths
solve the following simultaneous equations using matrices 3x-6y=24 and -4x+5y=-23
January 2, 2008

maths
Given g(x)= 1/3(x-2)^2-3 2<x<5 state the domain and image set g^-1 and find its rule
December 4, 2007

maths
given function G(x)=1/3(x-2)^2-3 2<x<5 sketch a graph of function y=g^-x and find the inverse function g^-1
December 4, 2007

maths
the equation of the circle is x^2-8x+y^2+4y+11=0 find any coordinates that intersect the line y=-x-1
December 3, 2007

maths
given the following equation for a circle x^2-8x+y^2+4y+11=0 find its centre and radius
November 12, 2007

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