10/21/13

How would you find the domain for f(x) = 2x - 4x^1/2 + 2 ?

How would you find the domain for f(x) = 2x - 4x^1/2 + 2 ? I'm not exactly sure what to do/what steps to take. Do you factor out a 2x1/2 from the whole problem and then get 2x1/2 times x2-3x+2?

10/21/13

If you need to find the total cost of something does that mean you have to add ?

If you need to find the total cost of a problem, does that mean you have to add?

10/21/13

I can't figure out how to do this problem:

x(x-6)[3x-x(7-2x)]   Please help me with this problem.  

10/21/13

Evaluate lim 1/x - log(1 +x)/x2

Evaluate lim   〈   1 - log(1 + x)〉                   x→0         x         x2

Prove that 1 + sin b - cos b =2sin1/2b cos1/2b +sin1/2b

Prove that 1 +sin b -cos b=2sin 1 b cos 1 b +sin 1 b                                               2          2           2   and hence solve 1 +sin b -cos b =0  0 = <b=<2¶

10/21/13

w + 4 <-2 is some problems we are needing help with

inequality questines

10/21/13

What is 4,2*10^8 / 2*10^4 ?

I have a clue how to solve this problem, but I need some extra help. Thanks!

(FIRST PART ALREADY ANSWERED AND NEW PART ADDED) Why do you find the domain of both the numerator and denominator in a rational equation? When do you do it?

For example, if you had:   x-3 ------ 5x+3   you'd only find the domain and use the denominator. Why wouldn't you also do the numerator?    And then you'd use both the  numerator and the... more

f(3)=5^x+5

 i am in need of help with this algerbric problem f(3)=5^x+5

Polynomial Function

Find a bound on the real zeros of the polynomial function.f(x) = x4 - 7x2 - 18   step by step instructions

10/21/13

dilute 55 liters of 20% salt solution to a 12% salt solution. How many liters of distilled water does the student need to add to the 20% salt solution to obtain

How many liters of distilled water does the sudent need to add to the20% salt solution to obtain the 12% salt solution? A student wants to dilute.

Find the requested composite function value.

For the given functions f and g, find the requested composite function value.f(x) = x-6/x  , g(x) = x2 + 9;Find (g f)(-2).   Please step by step instructions. Thanks ;-)

Show that 2[x-(2-3x)-4] is equal to x-5 when x=1.

please solve if x-5 when x=1

10/21/13

0.11(2k+1)+0.07k=0.24(k-1)+0.45

solution for the values. please

10/21/13

(0,5) 7x+2y=9

(0,5) 7x+2y=9

Composite Function: For the given functions f and g, find the requested composite function value.

 For the given functions f and g, find the requested composite function value.f(x) = 3x + 9, g(x) = -2/x; Find (g  f)(3).   Please step by step instructions

10/21/13

HELP ME OUT PLEASE SOLVE IT..............

Find the missing polynomial(2x^3-4x^2-7x+19)+ ? =x^2+3x+24

10/21/13

Given that 2x-5=3(2x-2)-15, WHAT IS THE EVALUATION OF 2X+1?

what is the evaluation?

Please solve this Word Problems.

1. Shipping charges are often based on a formula that offers a lower charge per pound as the size of the shipment is increased. Suppose shipping charges are as follows: $2.20 per pound if the... more

How do you know which way to shade a system of inequalities?

my problem is: y (less than or equal to) (-2/3)X + 3   y (less than or equal to) (4/3)X - 3   I know how to graph it I just do not understand the shading and how to know which way to shade it,... more

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