Friday

October 28, 2016
Number of results: 81,056

**algebra 2**

Find the LCD for the following pairs of rational expressions. numerator 8 divided by denominator x negative 13 and numerator 7 divided by denominator x plus 15

*October 29, 2009 by SaRa*

**Maths**

denominator of a fraction is 1 more than its numerator. the fraction reduces to one fourth when numerator is reduced by 2 and denominator is increased by 3. find the number

*May 24, 2011 by Abhishek*

**algebra**

The denominator of a fraction is 2 more than the numerator.If 1 is subtracted from both numerator and denominator,the result in fraction has value of 1/2.Find the original faction.

*July 31, 2016 by angel*

**precal help**

The numerator of a fraction is four less than the denominator The sum of the fraction and its reciprocal is 5/2 Find the numerator and denominator if each is a positive integer

*September 21, 2012 by Anonymous*

**precal help**

The numerator of a fraction is four less than the denominator The sum of the fraction and its reciprocal is 5/2 Find the numerator and denominator if each is a positive integer

*September 21, 2012 by Anonymous*

**algerbra 2**

B. The rational expression is not defined for any values of 20^2-180/4x^2+36+ 72 for which the denominator equals zero. Find the value(s) of for which the denominator equals zero.

*October 23, 2013 by hannah*

**le**

a fraction is such that the numerator is seven less than the square of the denominator. if six is added to the numerator and on to the denominator the result is 2. Find the fraction

*August 21, 2015 by john*

**Maths**

Find the denominator n of the rational number kn (k,n are both integers) such that ∣Root 2 - k/n∣ is the smallest possible, out of all rational numbers with denominator less than 1000?

*May 29, 2013 by ABCD*

**maths**

the denominator of a fraction is two more than the numerator.when we decrease the numerator by1 and increase the denominator by 3,we get 1/4.find the fraction

*November 8, 2014 by anuj*

**KUAI HELP!**

4/75, 2r/25, r/125 -1/x, 2/xy, x/y 1/a, 1/b write fractions as equivalent fractions with the least common denominator

*November 6, 2013 by rian*

**math**

how to use a common denominator to write an equivalent fraction for each fraction?

*March 13, 2014 by sam*

**LCD**

I need a reveiw on how to use the LCD least common denominator to add and subtract

*March 23, 2008 by ALi*

**5th grade math**

rewrite each pair of fractions as equivalent fractions with a common denominator? 2/3, 3/4

*January 9, 2012 by Alexia*

**Physics **

Problem 3- A 40 kg child swings in a swing supported by two ropes, each 3 m long. (a) If the tension in each rope at the lowest point is 350 N, a. find the child's speed at the lowest point. b. the force exerted by the seat on the child at the lowest point. (Neglect the mass ...

*November 23, 2013 by Mariam*

**Algebra**

2 divided by 5w+ 10, minus 3 divided by2w-4 2/(5w +10) - 3/(2w-4) ? That can be rewritten with a common denominator. (2/5)/(w+2) - (3/2)/(w-2) = [(2/5)(w-2) - (3/2)(w+2)]/(w^2-1) = [(-11/10)w - (19/5)]/(w^2-1) But it doesn't look any simpler that way.

*April 20, 2007 by Tony*

**Math**

How do you subract the fraction 2/5 and 4/9? Form a common denominator and subtract the numerators, like this: 20/45 - 18/45 = (20-18)/45 = ? I assume you wanted 2/5 subtracted from 4/9, not the other way around. If you want 2/5 - 4/9, the sign changes.

*December 25, 2006 by Sanjana*

**Maths**

The numerator of a is 5 less than the denominator. If 1 is added to both the numerator and the denominator the fraction would be 2/3. Find the fraction

*June 21, 2014 by Naziba*

**maths**

how do i solve this equation? 2/(x+1)=1/(x-1) - (1/(2x-1)) thx Get a common denominator (x+1)(x-1)(2x-1) then, each term, multipy it out. Gather terms, solve.

*July 12, 2007 by Emma*

**Math 111 (College Algebra)**

Rational number or irrational? And why? I have been challenged in my college algebra class to determine whether or not .12122122212222122221222221... (continuing forever)is a rational number or not. I need to prove one way or the other. I am lost! :-( I know that rational ...

*September 8, 2009 by Eleonora*

**algebra**

w10y12z _______ w6z5 Are those exponents like [(w^10)*(y^12)*z]/[(w^6)*(z^5)]? If so then you should have some rules telling you how to simplify ratios of expressions. If the exponent of the numerator's term is greater than the term's exponent in the denominator, then subtract...

*September 18, 2006 by amanda*

**math help**

How do you figure out a related sentence for fractions? (here is the problem) t + 1/8= 3/5 multipy the 1/8 by 5/5 or it is 5/40 Then, mulipy the 3/5 by 8/8 to 24/40 Finally subtract 5/40 from both sides. Think out why it is done this way. What do you mean by a "related ...

*February 13, 2007 by Emily*

**rs aggarwal math class 8 chapter 8 soluation**

in a fraction twince the numerator is 2 more than the denominator . if 3 is added to the numerator and to the denominator , the new fraction is 2/3 . find the original fraction.

*April 13, 2016 by rs aggarwal class 8 math si*

**math**

paul spends 2/3 of an hour exercising and 1/2 hour practicing the piano each day what is the least common denominator of these fractions?.

*September 17, 2012 by jammy*

**math**

the numerical expression for 7/8-3/4(2-1/6)-2/3 is equal to I made a common denominator of 24 21/24-1&+12/24+3/24-16/24 -15/24+3/24-16/24 -12/24-16/24 -28/24 both are divible by 2 -14/12 & divide both by 2 again to get -7/6 Is this correct? Thank you

*January 2, 2013 by es*

**maths**

the numerator and denominator of a fraction are in the ratio 3:2 if 3 is added to the numerator and 2 is subtracted from the denominator a new fraction is formed whose value is 9/4 find the original fraction?

*August 23, 2015 by vinit*

**math**

what is the greater common factor of 6/12 need all divisible numbers for both and put in lowest form as a fraction

*March 9, 2011 by Kylie*

**Math**

This is a fill in the blanks. The lowest common multiple is the ________ number the given numbers divide into evenly

*February 16, 2014 by Anonymous*

**Math - Maxima and Minima**

The height, h, in metres, of a ski ramp over a horizonatal distance, x, in metres, is given by h(x)=0.01x^3-0.3x^2+60 for the interval 0 less than or equal to x less than or equal to 22. a) Find the vertical drop from the top of the ramp to the lowest point on the ramp. b) ...

*October 23, 2010 by Anonymous*

**Math**

The numerator of a fraction is two less than its denominator. When both numerator and denominator are increased by 3, the fraction is incre ased by 3/20. Find the original fraction. Pls include solution and workings thx :)

*October 24, 2011 by Ghiffari*

**maths**

These questions concern the integers 84, 126, 168 and 294. 1)Choose the option that is the lowest common multiple of the four integers. 2)Choose the option that is the highest common factor of the four integers. Options for them: A) 28 B) 42 C) 63 D) 294 E) 3528 F) 7056 G 10) ...

*September 11, 2007 by z*

**Math**

Add or subtract the following rational expressions. Be sure to look for factors before trying to determine a common denominator, and simplify your answers, if possible. 16x-12/4x^2+5x-6-3/x+2

*February 8, 2016 by Anonymous*

**Math help plz ASAP.**

Rationalize each denominator. 6 + square root of 2 ____________________________ square root of 3 PLZ HELP..dont kno how to do this question.plz explain..thanks You have (6 + sqrt(2))/sqrt(3) multiply that by sqrt(3)/sqrt(3) to get [(6 + sqrt(2))*sqrt(3)]/3 and simplify To ...

*October 15, 2006 by Karla*

**algebra**

The denominator of a fraction is 12 more than the numerator. If 16 is added to the numerator and 16 is subtracted from the denominator, the value of the resulting fraction is equal to 2/1. Find the original fraction

*August 10, 2009 by Sarah*

**algebra**

The numerator of a fraction is 7 less than the denominator if three is added to the numerator and 9 is subtracted from the denominator the new fraction is equal to 3/2. Find the original fraction.

*September 27, 2012 by steph*

**Math**

The denominator of a fraction is one more then the numerator. If 2 were added to both the numerator and denominator, the new fraction equals 4/5. Find the original fraction.

*December 18, 2014 by Charles*

**math**

the difference between the numerator and denominator of a fraction is 5. if 5 is added to its denominator then the fraction is decreased by one of its one fourth 1(1/4). find the value of fraction

*January 6, 2016 by sarath*

**math**

the denominator of a rational number is greater than its numerator BY 7 if the numerator is increased by 17 and the denominator is deacreased by 6 the new number becomes 2 find the orginal number

*July 4, 2016 by hy*

**math**

the numerator of a fraction is 3 less than the denominator. if 4 us added to the numerator and to the denominator, the resulting fraction is equivalent to 3/4. find the original fraction. Show your solution

*September 23, 2016 by mm*

**math 116**

Is it always necessary to have a common denominator to add and subtract fractions? Why? What about multiplication and division with fractions?

*March 24, 2008 by Rosetta*

**Algebra 1**

Solve the equation by multiplying each side by the least common denominator. 2/h-2 + 4/h+1 = 0 I know the answer is 5, but I do not know how to solve the problem. Please explain further.

*April 18, 2008 by Nicole*

**math**

Find the least common denominator for fractions with the given denominators of 6, 8 and 10. Explain also what the LCM for these numbers would be. (c).The average person drinks about 3 1/5 cups of coffee per day. If a person works 5 days a week for 50 weeks a year. Find how ...

*January 10, 2009 by rosland*

**Mathematics**

Find a fraction which reduces to 3/4 when the numerator and denominator are each decreased by 1, and which reduces to 4/5 when the numerator and denominator are each increased by 1.

*January 17, 2012 by David*

**Mathematics**

Find a fraction which reduces to 3/4 when the numerator and denominator are each decreased by 1, and which reduces to 4/5 when the numerator and denominator are each increased by 1.

*January 17, 2012 by David*

**Calculus II**

So I'm trying to integrate a function using partial fractions. Here is the integral of interest: ∫(3x^2+5x+3)/[(x+2)(x^2+1)]dx. Since the numerator's degree of the polynomial is lesser than that of the denominator's degree, it is clear to separate. However, once I ...

*April 25, 2016 by Justin*

**physics**

The length of the auditory canal in humans averages about 2.5 cm. What is the second lowest standing wave frequency for a pipe of this length open at one end? Use 345 m/s for the speed of sound. I know that 4L=lambda, so lambda= 10cm. I know that f=v/lambda, so f=3450 Hz. But ...

*March 3, 2011 by Trace*

**Maths**

The first term of an AP is 12 and that of a GP is 6. The common difference and the common ratio are equal, so as are the sum of the fist 3 terms. Find the possible values of the common difference?

*December 1, 2014 by Andre*

**Algebra **

The numerator of a fraction exceeds the denominator. If 3 is added to the numerator and 9 is subtracted from the denominator, the new fraction is equal to 5/2. Find the original fraction.

*August 11, 2011 by Brandon*

**Math**

3 2 ----- - ------ 2a -2 1 - a 5 3 ----- - ------ 2x - 4 2 - x need a little understanding on these anyone? I don't understand the second term. Is it this? 3 2 ----- - ------ = 2a -2 1 - a 3 2 ----- - ------ = 2(a -1) 1 - a 3 2 ----- - ------ = 2(a -1) -( a-1) 3 2 3/2 +2...

*August 7, 2005 by leleirvin*

**math**

Find a fraction that reduces to 3/4 when both the numerator and denominator are decreased by i, and reduces to 4/5 when both the numerator and denominator are each increased by 1. I know the answer is 7/9, but i don't know how to solve (i must use a system of equations).

*January 23, 2013 by Molly*

**math**

the numerator of a fraction is 3 less than the denominator. if 4 us added to the numerator and to the denominator, the resulting fraction is equivalent to 3/4. find the original fraction

*September 23, 2016 by mm*

**math**

if there are 30 students in a class and 39 candys in a pack how many packs of candy do you have to buy so that there will be no left overs (hint us lowest common mutilple

*September 20, 2009 by christina*

**Limits-Rationalizing**

lim x->1 (1-(1/x^3))/ (1-(1/x^2)) I keep seeming to get a denominator of zero when I rationalized the denominator.

*March 13, 2013 by Marcus*

**math,algebra**

how do you solve this problem 3 and 1/3 subtracted by 1 and 2/3? Change the mixed number back to fractions with a common denominator. That would give you 5/3 subtracted from 10/3. How many thirds are left?

*December 16, 2006 by jasmine20*

**algebra**

simplify. assume no denominator is eual to zero. -10m-1y0r(numerator) -14m-7y-3r-4(denominator)

*January 21, 2010 by trista*

**algebra help!!!!**

Add: b^−3 ca^−1 −xc^−2 how would i do this ? Let me make sure I have the question right. We have b^(−3) ca(^−1) −xc^(−2 )=? You might also write this as (1/b^3) c(1/a) − x(1/c)= c/(a*b^3) - x/c=? If this is correct, then ...

*September 27, 2006 by jessica*

**Algebra 2**

The Denominator of a fraction exceeds the numerator by 4. When 3 is added to both the numerator and denominator, the fraction becomes 4/5. Find the fraction.

*October 10, 2012 by Larry*

**algebra**

the numerator of a fraction is 5 less than the denominator.if 1 is added to both the numerator and the denominator the fraction becomes 2/3. find the fraction

*November 22, 2012 by abdul basit*

**Maths**

The numerator of a fraction is 2 less than its denominator. If 3 is substracted from the numerator and from the denominator, the new fraction obtainded is 3/4. Find the fraction

*January 26, 2015 by Deron*

**Algebra**

In a certain positive fraction \frac{a}{b} , the numerator is 2 less than the denominator. If the numerator and denominator are interchanged, the fraction is increased by 1 \frac{1}{15} . Find a + b .

*March 12, 2013 by John*

**MATH**

HOW DO LEAST COMMON MULTIPLES WORK. IT SAYS THERE IS A PROBLEM TO SOLVE BUT MY MOM AND I CAN'T FIND IT. THEY CIRCLED BOTH 2'S AND 3'S. The least common multiple of 2 and 3 is six. The least common multiple of 12 and 6 is 12. # noun: the smallest multiple that is exactly ...

*January 2, 2007 by MORGAN*

**Basic Math**

A student claims that 2/3 = 6/7 because if you add 4 to both the top and the bottom of a fraction, the fraction does not change. How do you respond? I am a bit confused. Don't you need to have a common denominator?

*February 6, 2011 by Jordan*

**Algebra**

-9+3w/11 divided by 25w-75/121 Do I need a Common denominator? Would it be 121 as 11x11 is 121? Do I then multiply the numeratos- -9+3w by 11 or do I do the addition of -9+3w for-12w?

*January 23, 2008 by Marysvoice*

**physics**

calculate the speed of the pendulum at its lowest point if its PE is 5J at its heighest point and has a total mass of 1kg. 5 Joules = (1/2) M V^2 at lowest point. Solve that equation for V at lowest point.

*June 16, 2007 by Sweety*

**basic algebra**

the numerator of a certain fraction is four less then the denominator, if the numerator is doubled and the denominator is diminished by two, the sum of the original fraction and the new one is three. find the original fraction

*February 8, 2016 by kristina*

**Math**

Write each of the following as a common fraction or mixed number. Write your answer in lowest term 15.35

*February 19, 2008 by Trina*

**math**

Write the following as a common fraction or a mixed number. Write your answer in lowest terms. 0.44

*October 11, 2008 by Trac*

**math**

Write the following as a common fraction or mixed number. Write your answer in lowest terms. 0.44

*June 21, 2009 by Sandy*

**Math**

The lowest common multiple of two numbers is 36, one number is 12, what might the other number be?

*September 21, 2016 by Dania*

**Maths**

When the numerator and denominator of a fraction are each increased by 5, the value of the fraction becomes 3/5 When the numerator and denominator of that same fraction are each decreased by 5, the fraction is then 1/5 Find the original fraction. (Hint: Let the fraction be p/q...

*November 13, 2010 by Jannie*

**Math**

Chester and Kelsey were given a box of candy to sell. Each box of candy had 24 individual packages inside. Chester sold 1/4 of the candy in the box and Kelsey sold 3/8 of the candy in the box. Which of the following describes how to find the total number of packages That ...

*November 9, 2012 by Jerald*

**maths**

the numerator and denominator of a fraction are in the ratio 3:2 if three is added to the numerator and three is subtracted from the denominator a new fraction is formed whose value is 9/4 find the original fraction?

*August 23, 2015 by vinit*

**Algebra--One Quick Question**

31. Determine whether the sequence 7, 21, 35, 49 is geometric. If so, find its common ratio. a. no b. yes, common ratio of 14 c. yes, common ratio of 12 B? Thanks -MC

*June 18, 2010 by mysterychicken*

**6th grade math**

I still do not understand this problem? find a number such that when added to the numerator and denominator of 2/11 yields a fraction equivalent to 1/2? thanks If you add 7 to the numerator and 7 to the denominator you get 9/18. 9/18= 9x1/9x2 = 1/2 It means add the same number...

*March 8, 2007 by vince*

**Math / Fractions**

I have 3 mixed fractions 2 1/4 , 1 1/2 , 3 5/8 Now I already turned them into improper fractions. 9/4 , 3/2 , 29/8 But I'm a little confused on how to get the common denominator.. Is it 8? or do I multiply their factors?

*January 2, 2016 by Slave*

**Math**

Prove that (xt+yr)/yt is already in lowest terms, b and d have no common prime factor. Note that x/y and r/t are fractions in reduced terms.

*September 29, 2013 by John*

**Math**

Jack says that once you have a common denominator you are ready to subtract two mixed numbers. What other step might be necessary before you can subtract? Give an example.

*December 9, 2014 by Jamie*

**Physics**

A child of mass m sits in a swing supported by two chains, each of length R. The tension in each chain at the lowest point is T. Find the force of the seat on the child at the lowest point

*October 12, 2011 by Kari*

**Mathematics**

The numerator of a fraction is two less than its denominator. When both numerator and denominator are increased by 3, the fraction is increased by 3/20. Find the original fraction. Explain your solution

*October 22, 2011 by JP*

**St.george high school**

The numerator of a fraction is 8 less than the denominator.when 6 is added to the numerator and 10 is added to the denominator,the value of the fraction is unchanged.find the original fraction.

*November 4, 2012 by Lynn*

**algebra**

The denominator of a fraction is 4 less than the numerator .If the denominator is doubled and the numerator is increased by 6,the sum of the original fraction and the new one is 3 .Find the original fraction.

*September 18, 2015 by vincent*

**Calculus/College Algebra**

I'm so lost. We're working on limits for this assignment and I get that, but my difficulty lies in breaking down the original problem. The problem is: Find the limit: lim (x->5) The numerator is (the square root of 9-x) -2 and the denominator is x-(the square root of x+20...

*February 7, 2007 by Amy*

**math**

write the pair of the fractions as a pair of fractions with a common denominator : a.) 2/4 and 7/8. b.) 3/10 and 1/2. my answer for the a.) is 16/32-28/32. for b.) is 6/20-10/20 please let me know is my answers is right or not

*January 6, 2014 by Anonymous*

**math**

I need help on how to use a common denominator to write an equivalent fraction for each fraction?number 1 is 1/2,1/3 and number 2 is 7/8,3/10 please help

*March 13, 2014 by sam*

**math/algebra**

Subtract: express your answer in simplest form. 2/5 - y/y-2 answers a)-3y-2/y-2 b) -3y -2/5(4-2) c) -3y-4/5(y-2) d) -3y-4/y-2 The way you have written the problem, is 2/5 minus y^3. I don't think that is what you meant. Please use grouping symbols on fractions () or [] The way...

*July 15, 2007 by Diana*

**General Calculus Question**

How do you solve a limit when it approaches infinity and there is a square root in the denominator? say the highest power is x^2 in both the numerator and denominator.

*December 8, 2014 by Anonymous*

**Math**

Which is True? A 3/5 > 1/2 B 1/2 < 4/9 C 5/11 > 1/2 D 1/2 > 5/8 How do I determine? Thanks for the help! The shortcut for doing these is as follows: Cross-multiply by multiplying the numerator of the first times the denominator of the second. Then multiply the ...

*February 18, 2007 by Mikayla*

**math**

Solve this plxxx The numerator of a fraction is 2less than it's denominator.when both numerator and denominator are increased by 3,the fraction is increased by 3/20.find the original fraction.

*January 22, 2016 by Ali*

**math**

how do you solve this type of math problems that indicates to perform the indicated operations for 3 and 3/4 divided by 1 and 3/8 convert the whole numbers into fractions. 3 3/4 = 15/4 1 3/8 = 11/8 to divide 15/4 by 11/8 invert the denominator and multiply. so 15/4 x 8/11. ...

*December 4, 2006 by jasmine20*

**math**

Which is heavier 9 5/8 lbs or 9 3/4 lbs. common denominator, 8 . Therefore calcultion that 9 3/4 would be 1/8 heavier!

*March 11, 2011 by JUNIOR C*

**Math**

Outside temperature over a day can be modelled as a sinusoidal function. Suppose you know the high temperature for the day is 87 degrees and the low temperature of 63 degrees occurs at 5 AM. Assuming t is the number of hours since midnight, find an equation for the temperature...

*September 2, 2014 by Holly*

**advance functions gr 12**

use the asymptotes and intercepts to make a quick sketch of the function f(x)= x-2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x-2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c) determine the intervals of ...

*April 1, 2013 by james*

**advance functions gr 12**

use the asymptotes and intercepts to make a quick sketch of the function f(x)= x-2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x-2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c) determine the intervals of ...

*April 2, 2013 by james*

**Math advance functions gr 12**

use the asymptotes and intercepts to make a quick sketch of the function f(x)= x-2 (numerator) x+4(denominator) and its reciprocal f^r = x+4 (numerator) x-2 (denominator) on the same set of axes. b) describe the symmetry in the graphs in part a) c) determine the intervals of ...

*April 1, 2013 by james*

**basic math**

In my book A bread piece calls for 3 1/4 cups of flour if you only have 2 1/8 cup. How much more flour is needed? 3 1/4 -2 1/8= 13/4 - 17/9 how does it equal 13/4 can someone show me that part? I thought I knew how to subtract fractions but I don't get it. 3 1/4 - 2 1/8 = 13/4...

*August 6, 2007 by chrissy*

**Algebra**

Can someone verify if my answers are correct? Solve. 1/x+6-1/x-6 My answer is: -12/x^2-36 Solve. 1/x+5+2=5/x+5 My answer is: -3 Subtract. Express your answer in simplest form. 13x/30-4x/15 My answer is: x/6 Can someone verify if my answers are correct? Solve. 1/x+6-1/x-6 My ...

*July 12, 2007 by Need Help*

**Math - Algebra**

Solve the inequality. n-1/3n < n-4/3n-4 (it's actually less than or equal to) My first instinct is to multiply 3n, but that'll just give me squares and makes it harder to solve. I also thought about getting a common denominator, but I'm not sure. Thank you!

*December 29, 2008 by Momo*

**College Algebra**

Simplify the expression: (6ax4)^2(2x)^-2 I will be happy to critique your work or thinking on this. I will be happy to critique your work or thinking on this. Note that this is like a fraction with (2x)^2 in the denominator and (6ax^4)^2 in the numerator. You will get some ...

*July 7, 2007 by Rey*

**Algebra**

Rationalize V stands for square root 3/V2 3/V2 x V2/V2 = 3V2/V2V2= 3V2/V4 =3V2/2 Answer 3V2/2 6V2/V3 6V2/3 x V3/V3 =6V2V3/V3V3 = 6V6/3= 2V6 My book gives these two examples. In the first problem you multiply the 2 in the denominator and get 4. It the second problem the 3 in ...

*June 19, 2009 by G*

**Algebra**

the denominator of a fraction exceeds the numerator by 7, if the numerator is increased by 3, and the denominator is increased by 5, the resulting fraction equals 1/2. Find the original fraction.

*March 22, 2016 by Scotch*

**AP Physics **

A 35kg child sits in a swing supported by 2 chains, each 3.7 m long. If the tension in each chain at the lowest point is 274 N find the child's speed at the lowest point. (Neglect the mass of the seat). I'm not sure what equations to use to set this up

*October 27, 2015 by Chevy *