197 Answered Questions for the topic Rational Expressions
Rational Expressions
03/13/18
Rational expression application
The denominator of a fraction is 3 more than the numerator. If both numerator and denominator are decreased by one, the simplified result is 8/9. Find the original fraction.
Rational Expressions Algebra
02/27/18
The height of a right cylinder is 2r, where r is the radius. Write a function f in simplest form that represents the ratio of the surface area to the volume.
Not sure how to do this without the area?
Rational Expressions Algebra
02/26/18
Pump A empties water from a pool in 6 hrs. When Pump B is used with Pump A, the pool is empty in 1.5 hrs. How long does it take Pump B to empty the pool alone?
I do not really know where to start with this problem.
Rational expressions
Simplify the rational Expressions by multiplying or dividing. List any undefin values.
1. X2-12x+32/x2-6x-16 • x+2/x2-16
2. X-7/x2-2x-35 ÷ 9x+54/10x+50
3. X/x+1 + x+2/x2-1
4....
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Rational Expressions
12/20/17
How many magazines did the school library subscribe in December?
A school library spends $80 a month on magazines. The average price for magazines bought in January was 70 cents more than the average price in December. Because of the price increase, the school...
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Rational Expressions
11/25/17
Rational expressions
Can someone please help with this problem?
Find any values of the variable that make the expression undefined
2y =
8y+7
I did 8y+7= y= -7/8
so the answer will be...
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11/14/17
a. For what values of x is the radical defined?
The rational equation dealing with springs mentioned in the beginning of this lesson is v= √ (k∕m x²) . The letters k and m represent constant values that reflect the composition of the spring and...
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Rational Expressions
11/11/17
One number is 1/4 of another number. The sum of the two numbers is 10. Find the two numbers.
This is a question about rational expressions. I know there is a formula I just can't think of it.
Rational Expressions Precalculus
10/27/17
the perimeter of a rectangle is 28 cm. If the width measures 2/x and the length (3-x)/x^2 find the value for x
This needs to be answered in rational expressions
Rational Expressions Precalculus
10/27/17
2 people together can paint a room in 5 hours. it takes one of them 9 hours to paint the room how long would it take the other friend to paint by himself?
Its a precalculus question in rational espressions
Rational Expressions
10/17/17
what is the speed of the wind
an airplane can travel 355 mph in still air. if it travels 2562 miles with the wind in the same length of time it travels 2408 miles against the wind, what is the speed of the wind
10/13/17
It takes John 4 hours to do a job, it takes Kate 3 hours to do the same job, and it takes Nathan 2 hours. How long will it take if they all work together.
Need to know how much time it would take for them to finish the job, working as a team. In the fraction form.
Rational Expressions
09/30/17
I'm having trouble finding the restrictions for this problem
This problem was on a test and because I got it wrong my teacher wants me to redo it.(x2-4)/(x2+3x+2) * (x2-1)/(x2+x-6)(x-2)(x+2)/(x+1)(x+2) * (x-1)(x+1)/(x+3)(x-2)after simplifying I got...
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09/05/17
Find the partial decomposition for the rational expression:
15/(x^2-5x) is the rational expression. I got as far as 15/(x(x-5)). I don't know where to go from here.
09/05/17
Could you ever factor this or is this the final answer? Rational expressions.
I got to the final answer of...
-48x^4 - 42x^3 - 15x^2 -5x / (8x+7)(3x+1)
08/28/17
A rational function g(x) is such that g(x) = f(x) wherever f(x) is defined. Find the value of a and b.
f(x) = (2x-2)/ x2+x-2
g(x) = a/ b+x
Rational Expressions
08/08/17
Simplify the following: x^3−64 / x^2+2x−24
how do you simplify X^3 - 64
07/24/17
What is the probability of hitting each target if it is assumed that a player’s throw will always hit the board? Hint: The probability of hitting each target
Width:20 Length: 12x+24 of all boards(rectangles). Target within board 1 measurements(rectangle): width 6x-3 length: 2x+4. target within board 2 measurements (circle): radius 6x. target within...
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07/23/17
Jake can paint 1 room in t hours.Lionel can paint a room 2 hours faster than jake can.wayne can paint 2 rooms in 3 times the number of hours that lionel takes
to paint one room. that is the end of the question. How would I write an expression to represent the number of rooms per hour each person can paint?
Rational Expressions
07/13/17
What's the answer One number is 3 less than another. The sum of their reciprocals is equal to 7 divided by the product of the two numbers. Find the numbers.
One number is 3 less than another. The sum of their reciprocals is equal to 7 divided by the product of the two numbers. Find the numbers.
Rational Expressions
06/05/17
Rational Expressions
a) The area of a rectangle is x^2+7x+13. If the length is (x+4), write an expression for the width of the rectangle, including the remainder.
b) If the perimeter of the rectangle is...
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Rational Expressions
06/05/17
Rational Expressions
If the perimeter of the rectangle is 7, what are the length and width?
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