04/24/14

A and B go shopping.The total of money they have is 142.20$.B has three times of the amount A has,minus 56.20$. How much does A have and how much does B have?
I cant seem to answer this questions and am unsure about the steps
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04/24/14

x^2+8x-20=0 Solve using any method
I know the answer is 2,-10  can you please help me understand how to get that. thank you
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04/24/14

Differentiation Rules for Exponential Functions
how do you find the second derivative of y=e-x^2
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04/24/14

optimization
Jane wants to build a rectangular shaped dog pen. She has 500 feet of fencing and she wants to make the area as large as possible. a. What should the dimensions be to maximize the area? b. Could... more
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04/23/14

x^2-49=0 solve using quadratic formula
x^2-49=0 I know the answer is 7,-7 but I am not able to get that. please show me the steps so I can see what I am missing thank you
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04/23/14

x^2+x=12 solve using quadriatic formula
I know the answer is 3,-4 could you please show me how to work it all out. thank you Please use quadratic formula
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04/23/14

Intermediate Value Theorem
For f (x) = x^4 – 3x^2 − 8, use the Intermediate Value Theorem to determine which interval must contain a zero of f. Work/Explanation required 4. _______ A. Between 0 and 1 B. Between 1 and... more
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04/23/14

function help please
Let f(x)=   6x^2-6                     x^2-7x+10 (a) Write f(x) with the numerator and denominator completely factored. (b) State the domain. (c) State the vertical asymptote(s). (d) State... more
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04/23/14

help help help help
For the following if the function is one to one, find the formula for the inverse and show all work.   f(x)=5x+8    
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04/23/14

how do i find the answear to this problem 3(-5x-7)
Simplifying algebraic expressions
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04/23/14

Ray and Paul have 17 marbles. Ray and Paul have 15 marbles. Neil and Paul have 14 marbles.How many do they have all together?
I am trying to find out the answer to how many marbles each person has
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04/22/14

decimal help
how do I solve 2^x = 1000   (solve for x (round to 2 decimal places)   thanks
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04/22/14

Given C=124°,B=40°,and c=15., use the Law and Sines to solve the triangle for the value of a. Round answer to two decimal places.
Given C=124°,B=40°,and c=15., use the Law and Sines to solve the triangle for the value of a. Round answer to two decimal places.
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04/22/14

what is the equation for x + y = -3
I need (4) ordered pairs
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04/22/14

Need to know in meters how tall the building is please and thank you
 A surveyor standing 59 meters from the base of a building measures the angle to the top of the building abd finds it to be 36 degrees. the surveyor then measures the angle to the top of the radio... more
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04/21/14

Find the exact value
Cos(x)=1/4    csc(x) > 0   find sin (x/2) 
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04/21/14

solve equation
please help solve   if  f(x) = 2x + 4, and g(x) = (x^2 + x + 5), find g (f(x).       solve y = 3^x
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04/21/14

help express as a logarithm of a single value
how do I express as a logarithm of a single value:     1.  log25 + log28     2.  3log106     give the logarithms for log 1000     thanks
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04/21/14

how to write in exponential form
How do I write in expoinential form?   log432 = x     log10o.01 = -2   logab = 2     thankyou
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04/21/14

Graphing inequlities
How do I graph and show shading for -4x + 5y ≥ 20?  
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04/21/14

x^2=12x-40
Solve the following equation by completing the square. Express the roots in a+bi form.
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04/21/14

what are the set of real numbers greater than 12 or less than four?
Need help understanding number sets.
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04/20/14

how to solve circle equations
1.  How do I write an equation of the circle with center (-2,3) and radius 8?   2.  How do I found the radius and center using the equation  of a circle x^2 + y^2 - 10x + 4y + 13 = 0 ?   3. ... more
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04/20/14

i got a 84% overall. if my oter scores were math:95% geography:90% english:85% computer:80%, what was science:?
math:95% geography:90% english:85% computer:80%, what was science:?
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04/19/14

Help me with trapezoidal approximation?
The trapezoidal approximation of ∫ sin x dx from 0 to pi using 4 equal subdivisions of the interval of integration is    a) pi/2 b) pi c) (pi/4)(1+sqrt(2)) d) (pi/2)(1+sqrt(2)) e)... more
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