#### 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

#### 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

#### 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!

10/21/13

#### (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...
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10/21/13

#### 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.

10/21/13

#### 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 ;-)

10/21/13

#### Ali is paid double time if she works more than 37 hours in a week. One week she ears $653.25. If her normal hourly rate is $9.75, how many hours total worked?

How many hours in total did ali work that week?

10/21/13

#### hall A for $50 plus $3.25 per person, or hall B for $76 plus $1.25 per person. How many would Charlie have to invite (including himself) for both halls to cost

for both halls to cost the same

10/21/13

#### Kaleigh is three times as old as Juan. Seven years ago she was four times his age. how old are they both now?

how old are they both?

10/21/13

#### 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

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

what is the evaluation?

10/21/13

#### In half an hour Richar can shave 10 heads, while Nichole can shave 12 in 45 minutes. How many people will have shaved heads after 90 minutes?

charity head shave drive

10/21/13

#### It takes lorraine 6 hours or Rocio 10 hour to complete a project alone. how long sould it take them to complete a project together?

how long together

10/21/13

#### 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...
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10/20/13

#### 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,...
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