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Help!? PLEASE! Screenshot attached! 2 questions! 1 question answered! ONE TO GO!
 one year ago
 one year ago
Help!? PLEASE! Screenshot attached! 2 questions! 1 question answered! ONE TO GO!
 one year ago
 one year ago

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CoolsectorBest ResponseYou've already chosen the best response.1
5 people means 3.6 seconds so y people will be t seconds we can show it this way : dw:1350566474324:dw
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
now cross multiply and get the connection between y (number of people) and t (seconds)
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
and hey .. how are you ? :)
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
dw:1350566721091:dw
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
if you multiply one side by 100 you should multiply the other by 100 too
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
we need to isolate t from the equation that i gave you
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
no .. it's final answer is correct but i want you to be able to get it by yourself
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
there is no 75 in decart's answer :
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
\[\frac{ 5 }{ y } = \frac{ 3.6 }{ t }\] multiply both sides by \[y \times t\] we get: \[5t = 3.6y\] now divide both sides of the equation by 5 we get: \[t = \frac{ 3.6 }{ 5 } \times y\] which is the same as \[t=0.72y\]
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
yes sorry i was washing dishes lol
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
division of two fractions is like multiplying the first by the reciprocal of the second
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
\[\frac{ a }{ b } \div \frac{ c }{ d } = \frac{ a }{ b } \times \frac{ d }{ c }\]
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
so you can rewrite the problem as .. ?
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
no i just gave an example
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
you have to multiply the first fraction by the reciprocal of the second..
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
dw:1350568226013:dw
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
yes .. and changed the division to multiplication this his how you divide two fractions..
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
\[\frac{ (x^2x6)(x^2+5x+4) }{ (x^22x3)(x^2+x12) }\]
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
this is now what you have to simplify "so, do I multiply x^2 + x  12 by x^2 + 5x + 4 now? " no.. why you say that ?
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
\[\frac{ a }{ b } \neq a * b\]
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
we changed the division to multiplication because we divided FRACTION BY FRACTION
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
\[\frac{ 5 }{ 3 } * \frac{ 4 }{ 2 } = ?\]
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
right you just multiplied 5 with 4 and divided by the multiplication of 3 with 2
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
dw:1350569102823:dw
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
so same here .. after we changed the division into multiplication it's just multiplication of two fractions
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
you tell me .. how do we multiply those two fractions ?
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
i wont get mad why would i : look : \[\frac{ x^2x6 }{ x^22x3 } \times \frac{ x^2+5x+4 }{ x^2+x12 } = \frac{ (x^2x6)(x^2+5x+4) }{ (x^22x3)(x^2+x12) }\]
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
i dont know why you multiply numerator by denominator
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
this is what you get after the multiplication of the two fractions now we better factor every term than open the brackes like x^2x6 = x^23x+2x6 = x(x3)+2(x3) = (x+2)(x3)
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
yes look : whenever there is multiplication of two fractions you multiply numerator by numerator and denom by denom.. whenever there is division of two fractions you keep the first fraction as it is you change the division into multiplication but then for the second fraction you flip numerator and denominator and then you have multiplication of two fractions..
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
yes as i wrote up there
 one year ago

LCKBest ResponseYou've already chosen the best response.0
I'll just to butt in for a bit, the general flow of fraction division goes like this: 1. Turn the division into a multiplication by inverting the second fraction 2. Factorise as much as possible and eliminate common terms. 3. Solve by multiplying the numerator by the numerator and denominator by denominator. Yes I wrote the same thing as cool sorry :/.
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
now it's better to factor every term than open the brackets .. so factoring x^2x6 gives = x^23x+2x6 = x(x3)+2(x3) = (x+2)(x3)
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
can you factor the rest of the terms ?
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
yes.. i just showed the way
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
you see my last expression is (x+2)(x3)
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
now factor the rest of the terms .. what do you get ?
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
so are you factoring the rest ?
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
good so how the expression looks like ?
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
after you change every term by it's factored form
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
you have to replace every term by it's factored from like replaceing " x^2  x 6" by " (x+2)(x3) " in the last expression
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
now you can eliminate some of them..
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
if you have the same thing in the numerator and in the denominator you can eliminate it ..
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
dw:1350571449666:dw
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
so what is left .. \[\frac{ x+2 }{ x3 }\]
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
i hope the next question of this kind will be easier for you now that you know the steps
 one year ago

CoolsectorBest ResponseYou've already chosen the best response.1
Im happy i could help you
 one year ago
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