Questions on Algebra: Rational Functions, analyzing and graphing answered by real tutors!

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Question 187079This question is from textbook algebra2
: Find all of the rational zeros of each function
26. p(x)= x^3+3x^2-25x+21
p= (+or-)1, (+or-)3, (+or-)7, (+or-)21
q= (+or-)1
1/1 1/3, 1/7, 1/21This question is from textbook algebra2

Click here to see answer by jim_thompson5910(13787)

Question 187284: graph y=square root 2x-8

Click here to see answer by Alan3354(6079)

Question 187317This question is from textbook Prentice Hall Mathematics Algebra 2
: What are the steps in doing this problem? My algebra 2 teacher isn't very good at explaining This question is from textbook Prentice Hall Mathematics Algebra 2

Click here to see answer by user_dude2008(715)

Question 187327: I have a math project for school and it involves finding the equations of the following companies' data. I know how to graph these and the equations for each part of each graph; however, I don't know how to find an equation that will take into account the change in cost per minute. Thanks for any help!
Here is the data:
Company A: $30 fee, 10 cents a minute for the first 300 minutes, then 8 cents a minute after that.
Company B: No fee, 25 cents a minute for 200 minutes, 10 cents a minute for the next 500 minutes then 5 cents a minute.
Company C: $50 flat fee for the first 500 minutes, then 10 cents per minute.
Click here to see answer by stanbon(26273)

Question 187433: solving a quadratic equation?

x^2=-16
Click here to see answer by jim_thompson5910(13787)

Question 187453: 5y^2=-40
Click here to see answer by user_dude2008(715)

Question 187448: solving a quadratic equation?

5y^2=-40
Click here to see answer by jim_thompson5910(13787)

Question 187538: Please help me with this problem. I know the LCM is (x-2) (x+2) and this is multiplied on both sides, but I can’t figure out the problem.
24/x-2 + 24/x+2 = 5
________________________________________

I need to graph the linear equation. Please help me solve this.
x+5y ≥ -1

Click here to see answer by vleith(1977)

Question 187545: Suppose x and y vary inversely, and x = 5 when y = 1.6
1. Write a function that models the inverse variation.

2. Find y when x = 32
Click here to see answer by uday1435(57)

Question 187545: Suppose x and y vary inversely, and x = 5 when y = 1.6
1. Write a function that models the inverse variation.

2. Find y when x = 32
Click here to see answer by vleith(1977)

Question 187432: solving a quadratic equation?

x^2=-16
Click here to see answer by uday1435(57)

Question 187547: Suppose z varies directly as x and inversely as the square of y. When x = 35 and y = 7, the value of z is 50. Choose the function that models the relationship and z when x = 5 and y = 10
Click here to see answer by ankor@dixie-net.com(6693)

Question 187734: Can you put 9x^6 - 36x^3 in quadratic form?
Click here to see answer by Earlsdon(4900)

Question 187719: Find the quadratic equation with roots (4+i) and (4-i)
Click here to see answer by jim_thompson5910(13787)

Question 187775: let f(x)=7 if x <_ -3
f(x)=x+1 if -3< x <_ 4
f(x)=-2 if x > 4
evaluate and graph f(-6)
please explain
Click here to see answer by jim_thompson5910(13787)

Question 187723: Find the demensions of a rectangle a with the greatest area whose perimeter is 30 feet.
Click here to see answer by checkley77(7049)

Question 187772: I need help on showing that functions are inverse.
F(x)=10+(8/x) and g(x)=8/(x-10)
Click here to see answer by jim_thompson5910(13787)

Question 187838This question is from textbook saxon algebra 2
: what is the amplitude and the period of this graph: y=5cos 3 x
I know the amplitude is 5, but what is the period?This question is from textbook saxon algebra 2

Click here to see answer by stanbon(26273)

Question 187835This question is from textbook saxon algebra 2
: What is the amplitude and the period of this graph: y=-2sin x
I know the amplitude is 2, but what is the period?This question is from textbook saxon algebra 2

Click here to see answer by user_dude2008(715)

Question 187930This question is from textbook algebra2
: find (f+g(x), (f*g)(x) and (f/g)(x) for each f(x) and g(x)

4. f(x)=3x+4
g(x)= 5+x This question is from textbook algebra2

Click here to see answer by solver91311(5072)

Question 187951: WRITE AS A COMPLEX NUMBER IN STANDARD FORM ;)
-2i(5+i)
Click here to see answer by jim_thompson5910(13787)

Question 187955: WRITE AS A COMPLEX NUMBER IN STANDARD FORM ;)
(8+i)(2+i)
Click here to see answer by jim_thompson5910(13787)

Question 187957: WRITE AS A COMPLEX NUMBER IN STANDARD FORM ;)
5i/2+i
Click here to see answer by solver91311(5072)

Question 187956: WRITE AS A COMPLEX NUMBER IN STANDARD FORM ;)
6/1-i
Click here to see answer by solver91311(5072)

Question 187872: Find the domain of the rational function
f(x)=2x^2-4/3x^2+6x-72

Click here to see answer by solver91311(5072)

Question 187953: WRITE AS A COMPLEX NUMBER IN STANDARD FORM ;)

(4-i)(-2+6i)
Click here to see answer by jim_thompson5910(13787)

Question 187954: WRITE AS A COMPLEX NUMBER IN STANDARD FORM ;)
(5+3i)^2
Click here to see answer by Alan3354(6079)

Question 188108: Suppose x and y vary inversely, and x = 5 when y = 1.6
1. Write a function that models the inverse variation.

2. Find y when x = 32.
Click here to see answer by Mathtut(3670)

Question 188137This question is from textbook algebra2
: Find all of the zeros of f(x)=x^3-5x^2+8x-6
P=(+or-)1, (+or-)2, (+or-)3, (+or-)6
q= 1
I need help on the division part.This question is from textbook algebra2

Click here to see answer by stanbon(26273)

Question 188148This question is from textbook algebra2
: One factor of x^3+x^2-14x-24 is (x-4).
Find the remaining zeros.This question is from textbook algebra2

Click here to see answer by jim_thompson5910(13787)

Question 188164: y=2 to the square root of x+1+2 and i have to find the 3 x values and 3 y values to graph
Click here to see answer by Alan3354(6079)

Question 188195This question is from textbook algebra 2 with trigonometry
: what is the square root of y plus one minus five equals 8This question is from textbook algebra 2 with trigonometry

Click here to see answer by Mathtut(3670)

Question 188215: can you show me how to graph f(x)=[[-4.3+.]]
Click here to see answer by Alan3354(6079)

Question 188267: Simplify. State any restrictions on the variable.. please help me with these to. thanks for your help and time.

1. x^2-25/x^2+3x

2. 4x^2-25/2x^2+3x-20

Click here to see answer by Mathtut(3670)

Question 188199This question is from textbook algebra 2 with trigonomtry
: what is the square root of x minus 2 minus 7 equals negative 4This question is from textbook algebra 2 with trigonomtry

Click here to see answer by ankor@dixie-net.com(6693)

Question 188497: I am having a hard time trying to factor this equation. (x²-x+1)
Im starting to think it is prime but I'd like to make sure.
This is how i worked it out.
i know that each set of parantheses will start out with "x". then i would figure out what times what will give you a positive one and subtract to give you a negative one. If you could please explain to me how to come about getting this answer, that would be greatly apprciated.
Click here to see answer by Alan3354(6079)

Question 188271: Rational Functions and Their Graphs

please graph..
y=2/x and y=-2/x

y=-1/x and y=-1/x-2
Click here to see answer by Alan3354(6079)

Question 188590: Simplify. State any restrictions on the variable[thanks for your wonderful help]
x^2+x-6/x^2+3x

4x^2-25/2x^2+3x-20
Click here to see answer by jim_thompson5910(13787)

Question 188591: Multiply. State any restrictions on the variable.

x^2+6x-7/x^2+5x times 3x^2+16x+5/2x^2+7x-9
Click here to see answer by jim_thompson5910(13787)

Question 188592: Divide. State any restrictions on the variable.
y^2+5y+4/y^2-49 divide by 2y^2+5y-12/y^2+9y+14
Click here to see answer by jim_thompson5910(13787)

Question 188729This question is from textbook saxon algebra 2
: 4over square root 5 +square root 3
I worked it to 4(square root 5 -square root 3) over 2
Does this work out to 2(square root5-square root 3)?
Am I on the right track?This question is from textbook saxon algebra 2

Click here to see answer by jim_thompson5910(13787)

Question 188731This question is from textbook saxon algebra 2
: Graph the square root function and its inverse. Determine the domain and range of both functions. y=square root 2x-2
I got for the first one domain =x is greater than or equal to 1
the range is y is greater than or equal to 0
Inverse:1/2x+1
domain=x is greater than or equal to 0
range = y is greater than or equal to 1
Am I correct?This question is from textbook saxon algebra 2

Click here to see answer by jim_thompson5910(13787)

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