Tutors Answer Your Questions about Rational-functions (FREE)
Question 35451: (Intermediate Algebra: Rational Expressions)
4. For all r≠(+/-) 2, (r^2-5r+6)/(r^2-4) = ?
A. r-3/r+2
B. r-2/r+2
C. r-2/r+3
D. r+3/r-2
E. r+3/r+2
I'm confused, showing work would be great. I know its (A) but I don't know why.
Click here to see answer by Nate(3500)  |
Question 33925: The radius of the circular top or bottom of a tin can with a surface area S and a height h is given by
-h +√h^2 + .64s
r =-------------------------------
2
What radius should be used to make a can with a height of 35 inches and a surface area of 11,025 square inches?
A) 30 inches
B) 15 inches
C) 63 inches
D) 28 inches
Actual problem here: http://www.ccaurora.edu/mat090/Tests/test_chapter_8_files/image052.gif
Click here to see answer by venugopalramana(3286) |
Question 35806: Intensity of light, measured in lux(lx) varies inversely as the square of the distance between the light source and the object illuminated.
A light hangs 4.8 feet above the center of a circular table 7.2 feet in diameter. If the illumination is 25 lux at the center of the table, what is the illumination at the edge of the table?
Click here to see answer by stanbon(57962) |
Question 36872: m/m^2-m-12 + 5/m+3
This is what i came up with but i'm not exactly sure how i got it. I'm not sure how to get the denominators the same. Please walk me through this problem step by step. Thank you. I don't have a text book. My instructor gives us problems from his book.
5(m-4)/m+3(m+3)(m-4)
m+5m-20
answer =
6m-20/m^2-m-12
Click here to see answer by stanbon(57962) |
Question 37236: Create the quadratic equation in the form ax squared + bx + c using the point
(-1,7) as one point and the point (10,-8) as the vertex. enter a,b,c values as common fractions in reduced form.
i have several problems just like this to answer. i need to know how to come up with the equation. please help. cheryl mitchell clm031303@yahoo.com
Click here to see answer by AnlytcPhil(1278)  |
Question 37236: Create the quadratic equation in the form ax squared + bx + c using the point
(-1,7) as one point and the point (10,-8) as the vertex. enter a,b,c values as common fractions in reduced form.
i have several problems just like this to answer. i need to know how to come up with the equation. please help. cheryl mitchell clm031303@yahoo.com
Click here to see answer by stanbon(57962) |
Question 37253: My problem does not come from a textbook, but a worksheet.
I need to divide this rational expression:
((x^3-2x^2-63x)/(x^2-49)) / ((x^2-81)/x^2-7x))
sorry, I do not know how to make fractions or exponents on my computer.
Click here to see answer by fractalier(2101)  |
Question 37141: i am a homeschooled student i do not have text book curriculum. this question is probably going to sound stupid i just need an example because my program does not give me one that i can understand! thanks so much!
Give the Exclusion for the Variables:
12m^7t^5/-9m^2t^3
(exclusions example; 0 not equal to t, z in alphabetical order with comma)
(y means there are exclusions, N means there are no exclusions)
0 not equal to _________
(type y/n)_____________ exclusions
i know this problem sounds confusing and thats exactly what i am! thanks again!
-Leah
Click here to see answer by stanbon(57962) |
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