Studay Tyme ugainnnn!

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Studay Tyme ugainnnn!

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|dw:1432857499890:dw| @pooja195
aww no more brown face:c
aww i forgot >.<

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;) its k i bet we will have many more of these :P
|dw:1432857850783:dw|
so what kinda problems? :d chapter 11 or something?
All of chapter 11 i have 6 quizzes 1 on each section T_T
Do anything it takes i need to pass!!!1
\[\Large\rm \frac{3}{5}\div\frac{9}{25}\]Let's start with something like this :d simplify.
5/3
\[\Large\rm \color{red}{\frac{3}{5}}\color{royalblue}{\div}\color{green}{\frac{9}{25}}\]\[\Large\rm \color{red}{Keep}\color{royalblue}{Change}\color{green}{Flip}\]Mmm ok good you got it :)
\[\Large\rm \frac{4x^2}{49}\div\frac{x}{7}\]How bout this one?
brb
I DONT KNOW T_T
ZEPPY T_T I HATE THIS STUFF D:
\[\Large\rm \color{red}{Keep}\color{royalblue}{Change}\color{green}{Flip}\]
\[\Large\rm \color{red}{\frac{4x^2}{49}}\color{royalblue}{\div}\color{green}{\frac{x}{7}}=\frac{4x^2}{49}\times\frac{7}{x}\]Are you ok with that first step?
Yes
T_T i cant do this! >:I
cross cancel stuff that matches :)
It makes no sense T_T
ZEPPY T_T
Can we skip this one its too hard R_R
i dont like it T_T
\[\Large\rm =\frac{4x^{\cancel{2}}}{\cancel{49}7}\times\frac{\cancel{7}}{\cancel{x}}\]Cancel some stuff.
I cancelled an x from top and bottom, a 7 from top and bottom.
\[\Large\rm =\frac{4x}{7}\]And then just see what's left over.
skip it? :d but isn't this what your quiz is on? this kind of stuff?
yes T_T
i dont get it >_< he teached it a diffrent way .-. T_T
You really need to get comfortable with this "cancelling" idea. Here is a simple example:|dw:1432860109946:dw|
|dw:1432860187674:dw|
|dw:1432860300841:dw|
OOOOOOOOO I GET IT!!! GIVE ME ANOTHER ONE
\[\Large\rm \frac{8x^3}{7}\div\frac{2x}{21}\]
nvm i cant do it T_T
You understand the first step?\[\Large\rm =\frac{8x^3}{7}\times\frac{21}{2x}\]
Right we flip so we can multiply
|dw:1432860681486:dw|
Hmm I guess we have to break some stuff down and look for anything that cancels.
nothing cancels
Nothing? 0_o
Right away you should notice that you have x's in the top, and an x in the bottom. So you know that you'll have AT LEAST one cancellation.
|dw:1432860789982:dw|So we can cancel an x out of top and bottom, ya?
wait so after that you factor right?
we see a 7 and a 2 in the bottom. So we have to ask ourselves, do the 8 and 21 have any 2 or 7 factors in them? yes try to factor the 8 and 21. this isn't like the factoring we were doing back in last chapters though.
factors of 8? factors of 21? :o
168? O-o
no. this is not like the other chapter. we're `breaking down` the 8 and 21, not multiplying them together.
8 = ?
8=2x2x2 21=7x3
****8=2x2x2x2
No, you were right the first time :) lol
|dw:1432861257936:dw|Mmm k good
so cancel some stuff.|dw:1432861329403:dw|ya?
What are you left with?
12x^2
and whats left in the bottom? it's not a 0. when we cancel all of that stuff we're left with a 1, ya? :) So the bottom doesn't matter. Yay good job \c:/
\[\Large\rm \frac{64x^{15}}{2x^2}\]Simplify this.
This is an example where you REALLY REALLY don't want to break down the top into a ton of 2's and then expand the x's all the way out. It's just way too tedious. So try to break down the 64 into 2 `times` (something) Try to break down the x^(15) into x^2 `times` something
Can we do a diffrent one?
why?
Because.......lets just do a diffrent one
ummm... no? 0_o
So many 2's and x's
|dw:1432865219234:dw|