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Mathematics 12 Online
OpenStudy (anonymous):

HELPPPPP

OpenStudy (anonymous):

OpenStudy (anonymous):

Straight out add on the top because they have the same denominator.

OpenStudy (anonymous):

got c, correct? or no..

OpenStudy (anonymous):

Correct!

OpenStudy (anonymous):

thanks a bunch!

OpenStudy (anonymous):

one more question!

OpenStudy (anonymous):

Bring it on!

OpenStudy (anonymous):

OpenStudy (anonymous):

Wow...

OpenStudy (anonymous):

im stumped on this one :/

OpenStudy (anonymous):

Thats wow...

OpenStudy (anonymous):

Take the numerator from the large fraction and multiply it by the inverse of the denominator.

OpenStudy (anonymous):

I gotta graph;)

OpenStudy (anonymous):

Treat it as (x^2/y^3)/(x^7/y^6) which you can separate into (x^2/x^7) and (y^3/y^6)

OpenStudy (anonymous):

answer is D?

OpenStudy (anonymous):

i dont know :/

OpenStudy (anonymous):

when you divide exponents, you subtract the exponent of the denom. from the exponent of the top. so it would be x^(2-7)y^(3-6)

OpenStudy (anonymous):

so would that be 1/(x^5y^3)

OpenStudy (anonymous):

Correct

OpenStudy (anonymous):

Not answer B?

OpenStudy (anonymous):

answer a^

OpenStudy (anonymous):

answer b implies (y^6/y^3) instead of its reciprocal

OpenStudy (anonymous):

i figure this one out already can you? ;)

OpenStudy (anonymous):

Cancel the 1s lol

OpenStudy (anonymous):

i got the answer lol. do you know it?

OpenStudy (anonymous):

C?

OpenStudy (anonymous):

thats what i got! but idk forsure.. @slottedpig is c right?

OpenStudy (anonymous):

Hes gone...:(

OpenStudy (anonymous):

whaaaaaat :( how do you know??

OpenStudy (anonymous):

Hes just helping someone else lol, he will will be back man!

OpenStudy (anonymous):

ahhhh okay

OpenStudy (anonymous):

YUP!

OpenStudy (anonymous):

im going to post it again so he wont have to scroll up! lol

OpenStudy (anonymous):

No, the answer is b. The least common denominator of the top and bottom halves is xy Multiply both top and bottom halves by xy: you get \[((xy/x) - (xy/y))/((xy/x)/(xy/y))\]Since x/x = 1 and y/y = 1 you can cancel out several of these: \[(y-x)/(y+x) \]which is answer choice B (2). I understand how you got your answer (you probably subtracted the denominators of the top portion) but 1/2 - 1/3 is not -1.

OpenStudy (anonymous):

In my first equation I accidentally have an extra division sign: ((xy/x)/(xy/y)) This is a mistake, the division sign in the middle is supposed to be a subtraction sign

OpenStudy (anonymous):

WOW...@slottedpig

OpenStudy (anonymous):

i was about to ask what that was haha! alright we got it covered now!

OpenStudy (anonymous):

"This is a mistake, the division sign in the middle is supposed to be a subtraction sign" I meant it's supposed to be an addition sign.. sorry

OpenStudy (anonymous):

anyone wanna help me with 20 questions? just give me answers? ill pay you via paypal. im so tired :(

OpenStudy (anonymous):

@slottedpig ^

OpenStudy (anonymous):

@slottedpig

OpenStudy (anonymous):

OpenStudy (anonymous):

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