04/19/14

how to construct a mathematical model for each plan?
a. A flat fee of $50 per month for unlimited calls (is it 50=x)   b. a $30 per month fee for a total of 30 hours of calls and an additional charge of $0.01 per minute for all calls over 30... more
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04/19/14

basic algebra question
-5X + 4Y where X = 1/2 and Y = -1   -5 (1/2) + 4(-1)    - 11/2 + -4 =   -11/2 + - 8/2 =   -19/2 = -9 1/2   HOWEVER   the textbook reads the answer should be -6 1/2   Where am I going... more
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04/19/14

solve using synthetic substitution
using x^3 - 4x^2 + 2x + 1 =0     1.  using synthetic substitution, which of the possible rational roots is actually a root of the equation       2.  find the irrational roots of the... more
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04/19/14

solve an equation if -2 is a root
    how do I solve the equation x^3 + 2x^2 + x + 2 =0, if -2 is a root     thanks
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04/18/14

algebra help
f(x)=x+2 g(x)=4x^2-10 (FoG)(x) (GoF)(x)
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04/18/14

how to solve Descartes Rule of Signs and Facotr Theorem
  How many positive real roots and negative roots does this problems have,     1.  f(a) = a^5 - 4a^2 - 7       2.  f(x) = 3x^3 + 9x^2 + 8x     how do I use the factor theorem to... more
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04/18/14

there is 1 module divided in two parts unequally, 1st part get 50% fail nd 2nd get 40% fail then what will be the overall failure of whole module?
No additional details are provided for this queries. 
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04/18/14

How many quarts of pure antifreeze must be added to 9 quarts of a 20% antifreeze solution to obtain a 30% antifreeze solution?
How many quarts of pure antifreeze must be added to 9 quarts of a 20% antifreeze solution to obtain a 30% antifreeze solution?
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04/17/14

Please simplify 3(t^2)^-2/t-5
3(t2)-2 -----------(fraction) t-5
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04/17/14

Write the equation of a line parallel to the given line but passing through the given point.
y=-3x-6;(-1, 5)     
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04/17/14

I am doing a practice math test and am getting a different answer from what is given on the answer guide. The problem is (xy)^-1 / x^-2 + y^-2
Problem given         (xy)-1      x-2 + y-2   My answer   x2 + y2     xy   There Answer        xy      x2 + y2    
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04/17/14

Solve the following equation.
3x > -3   X_____________
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04/17/14

what are the three ways to heat water to make steam?
what are the three ways to heat water to make steam?
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04/17/14

what forces will turn a turbine of a generator?
what forces will turn a turbine of a generator?
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04/17/14

please find AB
matrix A= [3,-2, 0,5] matrix B=[1,7,4,2,3,1]
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04/17/14

System solving through elimination
3x-2y= -1 3x-4y= 9   by adding, I get:   -6y=8 /6=/6 y=4/3 ?   Do I need to multiply bottom equation by -1, before adding? 3x-2y=-1 -3x+4y= -9 2y=-10 /2=/2 y=-5  
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04/17/14

Solve ,equation ,check all proposed solutions Show work
Solve the equation. Check all proposed solutions. Show work in solving and in checking.   √(x+7)-5=x
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04/17/14

Solve the equation. Check all proposed solutions. Show work in solving and in checking.

Solve the equation. Check all proposed solutions. Show work in solving and in checking.      x      +    x     =  102   x-3         x+3      x^2-9  
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04/16/14

4t - 8 + 12 = 3 - 4t - 11
4t - 8 + 12 = 3 - 4t- 11
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04/16/14

2/3x+8/9X=ten
Evaluate each expression for x =10  leave answer as a fraction show work 2/3x + 8/9
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04/16/14

gina bough the following.......
Gina bought the following items: 0.45 kg of oranges at $3.80 per kg, one can of mushrooms for $0.75, one package of chicken breasts for $5.75, and 0.6 kg of tomatoes at $5.40 per kg. She also needs... more
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04/16/14

Factoring by grouping.
The question is    8ax-2a+4bx-b
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04/16/14

````````````````````c=42h+50
does the slope stay the same  steeper less steep
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04/16/14

Determine wether f is continious at x=c in the functions given below.
f(x)=x-1/x+1 at c=-1   What 3 conditions of continuity can I use to justify the answer
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04/16/14

Let f(x)=6-2x, Find f(-3)
Not good at math all, need serious help
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