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

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Question 318303: What are the non-permissible values for rational expression x^2 + x - 6 / x^2 + x -12
a) x = 0 and x = -4
b) x = 0 and x = -2
c) x = 3 and x = -4
d) x = 2 and x = -3
Click here to see answer by solver91311(16885)

Question 318390: 81^3/4--> i need to write an equivalent expression
Click here to see answer by jim_thompson5910(28595)

Question 318513: -5/4a times -5b/6
Click here to see answer by Fombitz(13828)

Question 318578: Divide: (4m + 16) / (10) / (3m + 12) / (18)
a) 12 / 5
b) (m + 4)^2 / 15
c) 15 / (m + 4)^2
d) 5 /12
Click here to see answer by Fombitz(13828)

Question 318578: Divide: (4m + 16) / (10) / (3m + 12) / (18)
a) 12 / 5
b) (m + 4)^2 / 15
c) 15 / (m + 4)^2
d) 5 /12
Click here to see answer by JBarnum(2044)

Question 318604: Use the equation y = 6 /x to solve the following problem. What is the value of x when y = 4?
a) 1.00
b) 1.50
c) 0.67
d)1.33
Click here to see answer by rfer(12660)

Question 318664: given:

f(x)= x2+x-6/x2+8x+15
Write the solution set in the blank using interval notation for f(x)>0
The (x2) parts in the problem mean (x squared)
The f(x)>0 is supposed to be (greater than or equal to) not just greater than
Thank you for taking the time to look at this, appreciate it alot.
Click here to see answer by Fombitz(13828)

Question 318750: Multiply: 15a^2 / 14 * 7 / 5a
a) 21a / 2
b) 6a
c) 3a / 2
d) 3a^2 / 2
Click here to see answer by nyc_function(2733)

Question 318768: Suppose you use 4 letters from the 26 letters of the alphabet to create a passord. How many possible four - letter passwords can be created if letters cannot repeat?
a) 358,800
b) 14,950
c) 104
d)456,976
Click here to see answer by Fombitz(13828)

Question 318853: solve: 3/5 + 2 / x - 1 = 4 / 5x - 5
a) 5 / 3
b) - 5 / 3
c) 1
d) -1
Click here to see answer by JBarnum(2044)

Question 318751: X Y
15 N
18 8 1/3
24 6 1 / 4

The table above represents an iverse vartiation. What is the value of N?
a) 15
b) 10
c) 12 1 /2
d) 5 1 /2
Click here to see answer by Fombitz(13828)

Question 318890: 3 over x equals x over 12. Or 3/x = x/12.
Solve this Rational Eqauation.
Click here to see answer by Alan3354(30993)

Question 318855: The 10th grade raffle sold 127 tickets. If they award 1st and 2nd prize, how many different pairs of winners are possible?
a) 16,129
b) 254
c) 16,002
d) 8,001
Click here to see answer by rfer(12660)

Question 319022: In a permutation,
a) some items will never be used
b) there must be at least 3 things to choose from
c) the selections are independent
d) the order matters
Click here to see answer by Edwin McCravy(8909)

Question 319027: Find the difference. Express your answer in simplest form.
4a / 4d - a / 4d
a) 3a
b) 5a / d
c) 5a / 4d
d) 3a / 4d
Click here to see answer by Fombitz(13828)

Question 318949: Find the value of x for which f(x) = -1.
This is based on a graph (-2,-2) (1,2)
Can you help with this, please?
Beto
Click here to see answer by Fombitz(13828)

Question 318948: Homework problem
Find the value of x for which f(x) = -1.
This is based on a graph (-2,-2) (1,2)
Can you help with this, please?
Mark
Click here to see answer by Fombitz(13828)

Question 319024: Solve: 1 / x + 2 + 1 / x - 2 = 1 /x^2 - 4
a) -2
b) 2
c) 1/2
d) -1/2
Click here to see answer by mananth(12270)

Question 319023: The 10th grade raffle sold 127 tickets. If they award 1st and 2nd prize, how many different pairs of winners are possible?
a) 16,129
b) 16,002
c) 254
d) 8,001
Click here to see answer by edjones(7569)

Question 319103: Please help me solve rational exponents and radicals
(-a^2b/2b^-1)^3=
(4x/y^3)^-3=
11^1/2 * 11^3=
Click here to see answer by Fombitz(13828)

Question 318011: how do u solve u+6z divided by 3u - 5u+9z divided by 3u

Click here to see answer by Fombitz(13828)

Question 318058: y = (-4x^2) - 12x + 9
a. Determine the vertex of the function
b. determine if the funtion is concave up or down
c. Determine the zeros if any
Click here to see answer by Fombitz(13828)

Question 319326: Let f(t) = t2 + 3 and g(t) = 4t - 3 Find (f o g)(-1)
Click here to see answer by solver91311(16885)

Question 319358: find the lcm of 21x^3 and 63x^9
find the lcm of t^2-36 and t^2+7t+6
find the lcm of v^3+8v^2+16v, v^2-8v\
find the lcm of 9y^2+27y and 3y^2+12y+9
Click here to see answer by Alan3354(30993)

Question 319354: divide and simplify.
1. c/h^2 / c^2/h^3
2. x^2-25/x / x-5/x+2
3. y^2-16/25y+100/ y-4/20
4. s^2+9s/s^2+4s-45/ s/s+5
Click here to see answer by Alan3354(30993)

Question 319375: Find the LCD for the following rational expressions.
-3 / x^2 - 2x + 1 2x / x^2 - 5x + 4
a)(x - 1) (x + 4)
b)(x - 1)^2 (x - 4)
c)(x - 1)^3 (x -4)
d)( x - 1) (x - 4)
Click here to see answer by Alan3354(30993)

Question 319351: find all numbers for which the rational expression is undefined.
- 17/2x
find all the numbers for which the rationsl expression is undefined.
q^3-3q/q^2-36
Click here to see answer by solver91311(16885)

Question 319404: I need help to figure out how to solve this:
6y/y+5 + 1=
It is in the chapter of adding and subtracting rational expressions with unlike denominators.
Thank you,
Melissa Brown
Click here to see answer by stanbon(57347)

Question 319444: Find the differnece. Express youe answer in simplest form.
x^2 + 3 / x - 2x^2 + 5 / x
a) -x^2 - 2 / x
b) -x^2 - 8 / 2x
c) 3x^2 - 8 / 2x
d) 3x^2 - 8 / x

Click here to see answer by mananth(12270)

Question 319463: simplify ^5sqrtx^10=x
Click here to see answer by Alan3354(30993)

Question 319580: graph the following using intercept method and identify the number of solutions:
x=-2y+3
y=2x+4
Click here to see answer by stanbon(57347)

Question 319682: Simplify
(2x-3)(x^2+19)^21
__________________
(3-2x)(x^2+19)^22
The answer I think is correct is:
2(x^23+19^21)
_____________
-2(x^24+19^22)
Is this correct? I'm thrown off by switching the 3-2x in the denominator to cancel out the 2x-3 in the numerator...
Click here to see answer by jim_thompson5910(28595)

Question 319691: 2x/x^2+4 minus 2x-1/x^2+4

The answer I came up with was -1/x^2+4, is this correct?
Click here to see answer by jim_thompson5910(28595)

Question 319691: 2x/x^2+4 minus 2x-1/x^2+4

The answer I came up with was -1/x^2+4, is this correct?
Click here to see answer by checkley77(12569)

Question 319694: x/x^2-1 minus 1/x+1
= x/(x+1)(x-1) minus 1 (x-1)/x+1(x-1)
=x-1x-1/(x=1)(x-1)
Correct?
Click here to see answer by jim_thompson5910(28595)

Question 319697: 2(x-1)^/y divided by 2/(x-1)y^4
= 2(x-1)^2/y multiplied by (x-1)y^4/2
= (x-1^2(x-1)y^3 ????
Click here to see answer by jim_thompson5910(28595)

Question 319723: solve for x: 1/x +1/x+3=1/2
Click here to see answer by jim_thompson5910(28595)

Question 319745: simplify [(5/b) - (5/a)] / [(1/b^2) - (1/a^2)]
Click here to see answer by mananth(12270)

Question 319736: Using the Pythagorean Theorem, find the distance between two points in opposite corners of a room, one point in a corner on the floor and the other in the opposite corner on the ceiling. The dimensions of the room are 13 ft by 13 ft.

Click here to see answer by Alan3354(30993)

Question 319818: Find the sum. Express your answer in simplest form.
(14a^2 / 2b) + (3a / 2b)
a) 14a^2 + 3a / 4b
b) 11a^2 /2b
c) 14a^2 + 3a / 2b
d) 11 / 2b
Click here to see answer by nyc_function(2733)

Question 319884: Find the LCD for the following rational expressions.
(-3 / x^2 - 2x + 1) (2x / x^2 - 5x + 4)
a)( x - 1) (x - 4)
b)(x - 1)^3 (x - 4)
c)(x - 1) (x + 4)
d)(x - 1)^2 (x - 4)

Click here to see answer by nyc_function(2733)

Question 319823:
Find the LCD for the following rational expressions.

a)( x - 1) (x - 4)
b)(x - 1)^3 (x - 4)
c)(x - 1) (x + 4)
d)(x - 1)^2 (x - 4)
Click here to see answer by braithiar(3)

Question 319996: rational zeroes theorem of x^4+2x^3-x^2+4x-6
Click here to see answer by Edwin McCravy(8909)

Question 320022: find the inverse of 6x-1/2y+4=0
Click here to see answer by stanbon(57347)

Question 320094: Help may be on my exam. Please!!!!!!!
solve sqrt 2x^2 + 7x= x+2
Click here to see answer by Fombitz(13828)

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