197 Answered Questions for the topic Rational Expressions

04/19/15

Rational Equations
Octavian invests some money at 8.5% and half as much at 10%. in time, he receives $1000 interest. how much did he invest at each rate?
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Rational Expressions Alegbra Math 115

04/19/15

About 6 out of 10 people entering a community college need to take a class. If there are 990 entering students, how many will probably need to take the class?
please help me solve this question 
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Rational Expressions

04/09/15

Adding and Subtracting Rational Expressions-5 questions
Adding and Subtracting Rational Expressions-5 questions1.Simplify quantity t squared plus 6 t over the quantity t minus 1 end quantity minus 7 over quantity t minus 1 2.Simplify 3 over x plus 13... more
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Rational Expressions Word Problem

04/01/15

a person can see 72 mi to the horizon from an airplane window. How high is the airplane? Use the formula D=1.2vh, where D is in miles and h is in feet.
a person can see 72 mi to the horizon from an airplane window. How high is the airplane? Use the formula D=1.2√h, where D is in miles and h is in feet.
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Rational Expressions Word Problem

03/31/15

r=2v5L Can be used to approximate the speed r, in miles per hour, of a car that has left a skid mark of length L, in feet. Use this formula to solve the followi
r=2√5L Can be used to approximate the speed r, in miles per hour, of a car that has left a skid mark of length L, in feet. Use this formula to solve the following.   How far will a car skid at... more
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Rational Expressions Word Problem

03/30/15

An observation deck near the top of Willis towers (formerly known as Sears tower) in Chicago is 1353 ft high. How far can a tourist see to the horizon from this
How far can you see to the horizon from a given height? the function D=1.2√h   can be used to approximate the distance d, in miles, that a person can see to the horizon from a height h, in... more
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Rational Expressions

03/30/15

Rationalize the denominator. Assume that no radicands were formed by rasing negative numbers to even powers.
Rationalize the denominator. Assume that no radicands were formed by rasing negative numbers to even powers. 7√2 + 4√34√3 - 3√2
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Rational Expressions

03/29/15

Multiply. Assume that no radicands were formed by raising negative numbers to even powers.
Multiply. Assume that no radicands were formed by raising negative numbers to even powers.   (^3√8x - ^3√5y)^2
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Rational Expressions

03/29/15

Rationalize the denominator. Assume that no radicands were formed by rasing negative numbers to even powers.
Rationalize the denominator. Assume that no radicands were formed by rasing negative numbers to even powers.   7√2 + 4√ 4√3 - 3√2
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03/24/15

Apipe on a swimming pool can be used tofill the pool in 14 hours. The drain pipe can be used to empty the pool in 15 hours...
An inlet pipe on a swimming pool can be used to fill the pool in 14 hours. The drain pipe can be used to empty the pool in 15 hours. If the pool is 2/3 filled already,and both pipes are open,how... more
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Rational Expressions

03/13/15

Rewrite rational expressions. Show all work and circle your answers.
(4c^2-4c-8)/(c^4-4c^3+4c^2)  Thank you for your help.
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Rational Expressions

03/13/15

Rewrite rational expressions. Show all work and circle your answers.
(1/y  +  1/2y+1) / (4y/2y+1)  thank you for your help.
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Rational Expressions

03/13/15

Rewrite rational expressions. Show all work and circle your answers.
([j-1]/j)/([j^2-1]/j^2) in other words it is a fraction over a fraction. the numerator of the fraction on top is j-1 and the denominator is j. this fraction is on top of the fraction with the... more
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Rational Expressions

03/10/15

For the given rational function f, find all values of x for which f(x) has the indicated value
For the given rational function f, find all values of x for which f(x) has the indicated value   f(x)=2x-15/x; f(x)=1
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Rational Expressions Word Problem

03/09/15

Samantha can deliver papers three times as fast as her sister, Elizabeth. If they work together, it takes them 1 hour. How long would it take each to deliver th
Samantha can deliver papers three times as fast as her sister, Elizabeth. If they work together, it takes them 1 hour. How long would it take each to deliver the papers alone? 
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Rational Expressions Word Problems

03/09/15

A commercial contractor needs to clear a plot of land for a new bank. Ryan can clear the lot in 7.5 hours. Ethan can do the same job in 10.5 hours. how long wil
A commercial contractor needs to clear a plot of land for a new bank. Ryan can clear the lot in 7.5 hours. Ethan can do the same job in 10.5 hours. how long will it take them to clear the land... more
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Rational Expressions

03/08/15

Simplify Rational expressions
Simplify   1/b^2-1/c^2 1/b^3-1/c^3
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Rational Expressions

03/08/15

Perform the indicated operations and simplify
Perform the indicated operations and simplify   1     +   1      - 2b b-a       a-b      a^2-b^2
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Rational Expressions

03/08/15

Simplify Rational expressions
Simplify   1/x+h  - 1/x         H
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Rational Expressions

03/06/15

Keisha runs 10 miles in 75 minutes. At the same rate, how many miles would she run in 69 minutes?
Keisha runs 10 miles in 75 minutes. At the same rate, how many miles would she run in 69 minutes?
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Rational Expressions Rational Functions

03/05/15

Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form.
Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form.   3x-1/x^2+2x-3  -  x+4/x^2-9
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Rational Expressions Rational Functions

03/05/15

Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form.
Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form.   3y+2/y^2+5y-24  + 7/y^2+4y-32
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Rational Expressions Rational Functions

03/05/15

Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form.
Add or subtract. Then simplify. If a denominator has three or more facotrs (Other then monomials.) Leave it in factored form.   y/y^2-y-20  + 2/y+4
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Rational Expressions

02/24/15

A roofer requires 10 h to shingle a roof. After the roofer and an apprentice work on a roof for 5 h, the roofer moves on to another job.
A roofer requires 10 h to shingle a roof. After the roofer and an apprentice work on a roof for 5 h, the roofer moves on to another job. The apprentice requires 9 more hours to finish the job. How... more
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Rational Expressions

02/18/15

Three computers can print out a task in 10 min, 15 min, and 30 min, respectively. How long would it take to complete the task with all three computers working?
Three computers can print out a task in 10 min, 15 min, and 30 min, respectively. How long would it take to complete the task with all three computers working?  
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