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

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Tutors Answer Your Questions about Rational-functions (FREE)


Question 36949: Simplify using factoring and cancellation
(y^3-19y-30)/(y+2)

Click here to see answer by fractalier(1804) About Me 

Question 38301: Find the zeros of the function f(x)=2x4-xウ+3xイ-3x-9
Note please that where it says 2x4 it's actually supposed to be 2x to the fourth power. Thank You.

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Question 37011: i have this problem but it's not in the book...
Find what the minimum surface area for a cylindrical can will be to hold . Give the radius and height.



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Question 38383: This question is on our homework and I have no idea how to do it:
If a fraction has the value of 2/3 and the numerator is increased by 10, and the denomonator is increased by 20, the new fraction has the value of 3/5. Find the original fraction.
I don't even understand the question.

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Question 38240This question is from textbook
: solve and graph the solutions
3x-6-9>3
This question is from textbook

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Question 38418: i need a little help with adding or subtracting unlike rational expressions
2/5w+10-3/2w-4

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Question 38537This question is from textbook
:
    Simplify the expression: 

   xイ - 9       4xイ - 12x + 36 
覧覧覧覧覧覧 ラ 覧覧覧覧覧覧覧覧
2xイ - 8x + 6        xウ + 27
This question is from textbook

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Question 38543This question is from textbook Algebra 2 with trig
: Find g(f(x)) for g(x)=x2, f(x)=absolute value xThis question is from textbook Algebra 2 with trig

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Question 38550: 4) Find the vertex, the line of symmetry, and the minimum or maximum value.
f(x)= -2(x+1)2 -2

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Question 38347This question is from textbook glenco mathematics algebra 2
: help!!! please explain question 20 on page298This question is from textbook glenco mathematics algebra 2

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Question 38178: need help solving for x: x-4/x-3 + 4 = 3x/x
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Question 37572This question is from textbook college algebra
: f(x)=x^3+2 graph and solve This question is from textbook college algebra

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Question 38632This question is from textbook college algebra
: I need help with an example of a function and then I need help defining it. Can someone please help me!? Thanks alot!This question is from textbook college algebra

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Question 38633: Let y = sqrt((x+1)(x+3)/(x+2).)Find all the real values of x for which y takes real
values.

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Question 38633: Let y = sqrt((x+1)(x+3)/(x+2).)Find all the real values of x for which y takes real
values.

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Question 38635This question is from textbook college algebra
: True of false: A function f is decreasing on an open interval I, if for any choice of x1, and x2 in I, with x1 < x2, we have f(x1) > f(x2).This question is from textbook college algebra

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Question 38634This question is from textbook college algebra
: Write the point -slope form of the line with slope 5 containing the point
(3, -2).
This question is from textbook college algebra

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Question 38634This question is from textbook college algebra
: Write the point -slope form of the line with slope 5 containing the point
(3, -2).
This question is from textbook college algebra

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Question 38843This question is from textbook Elementary Algebra
: I need help simplifying this problem:
6-x over x-6 (divison)
This question is from textbook Elementary Algebra

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Question 39145: Please help me determine an equation of the line through (-3,4) and perpendicular to the line with the equation 4x-2y=1. I came up with y=-2x+7.
Am I even close?

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Question 39171This question is from textbook Algebra 1
: I am having a problem with my final exam study guide. The problem is "The ratio of boys to girls is 2 to 5. If the total number of students is 182, how many boys are in the class?" So far I have tried 2/5 = x/182 and came up with an answer of 72.8 boys. Is this the correct answer? If not, can you show me step by step how to answer it? Thank you for the help!This question is from textbook Algebra 1

Click here to see answer by Nate(3495) About Me 
Question 39171This question is from textbook Algebra 1
: I am having a problem with my final exam study guide. The problem is "The ratio of boys to girls is 2 to 5. If the total number of students is 182, how many boys are in the class?" So far I have tried 2/5 = x/182 and came up with an answer of 72.8 boys. Is this the correct answer? If not, can you show me step by step how to answer it? Thank you for the help!This question is from textbook Algebra 1

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Question 39186: given f(x)=(x^3-4x^2+kx-2k)/ (x-5) find the value of k so that the remainder = 0
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Question 39303: When you are trying to find all of the possible rational zeros, I think you are supposed to use +/- p/q. But how do you find p/q, and is that what you are supposed to use?
Click here to see answer by fractalier(1804) About Me 

Question 39325: 1. f(x)= x^+3x-4 divide over x^+5x-6
find va vertical asymptote
ha horizontal asymptote
x-intercept
y=intercept
and graph it w the t chart plz help me solve this problem thank you

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Question 39438: what's the answer to this problem? 10y2+15y divded by 35y2-5y
(the 2's beside the y's mean the y's are squared)

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Question 39544: find the constant of variation k.
m varies directly with n; m=144 when n=8

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Question 39544: find the constant of variation k.
m varies directly with n; m=144 when n=8

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Question 39542: Find the slope of the line through the given points.
(2,4)and (6,-3)

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Question 39542: Find the slope of the line through the given points.
(2,4)and (6,-3)

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Question 39542: Find the slope of the line through the given points.
(2,4)and (6,-3)

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Question 39541: The cost of producing a number of items x is given by C=mx+b, in which b is the fixed cost and m is the variable cost (the cost of producing one more item).
(a) if the fixed cost is $40 and the variable cost is $10, write the cost equation.
(b) Graph the cost equation

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Question 39541: The cost of producing a number of items x is given by C=mx+b, in which b is the fixed cost and m is the variable cost (the cost of producing one more item).
(a) if the fixed cost is $40 and the variable cost is $10, write the cost equation.
(b) Graph the cost equation

Click here to see answer by venugopalramana(3286) About Me 

Question 37452This question is from textbook Glencoe Mathemathics
: Perform indicated operations and simplify the result. Leave answer in factored form.
(3x/x-1)-(x-4/x^2-2x+1)
This question is from textbook Glencoe Mathemathics

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Question 38852This question is from textbook Elementary Algebra
: Please help me to perform indicated operation and simplify if possible:
5x over x^2-9 minus 4 over 3-x
This question is from textbook Elementary Algebra

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Question 39601: Please explain to me how this equation can be a function
x^2=1+y^2

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Question 39613:
Write a quadratic equation that has the following two solutions: 
x = 4 and x = -9) 
here is my equation

 (x - 4)(x + 9) = 0
  
   xイ + 5x - 36 = 0

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Question 37067: f(x)=3x+2
g(x)=(x-2)/3
1) find [f(g(x))]. show steps.
2) find [g(f(x))]. show steps.

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Question 39849: Solve the equation and check for extraneous solutions.
sqrt(2x^2-1)=x

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Question 39848: Solve the equation and check for extraneous solutions.
1.5sqrt(3x-2)-3=7

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Question 39861: The question is find all of the rational zeros of g(x)=2x^3-11x^2+8x+21
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Question 39913: If possible, simplify the ratinoal expression.
x + 3 / x^2 + 6x + 9

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Question 39910: If possible, simplify the ratinoal expression.
y^2 - 81 / 2y - 18

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Question 39914: If possible, simplify the ratinoal expression.
y^2 - 7y / y^2 - 8y +7

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Question 39911: If possible, simplify the ratinoal expression.
2x - 3 / 4x - 6

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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690