anonymous
  • anonymous
Who can teach me basic math skills? pleaseeee, this is very urgent!
Mathematics
  • Stacey Warren - Expert brainly.com
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katieb
  • katieb
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hartnn
  • hartnn
yes, do you have any specific question ?
cgreenwade2000
  • cgreenwade2000
Sounds like a lot of work , but what exactly do you call basic?
anonymous
  • anonymous
nope, nothing in mind.. i guess first thing i would like to learn is how do you cross multiply?

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anonymous
  • anonymous
its just that i will be taking a test over these skills to see how much i know and i know nothing at all :/ so i need some help
Goten77
  • Goten77
basic skills lesson 1: \[\int\limits_{}^{}= the INtegral symbol\]
anonymous
  • anonymous
okayy..
hartnn
  • hartnn
sure, cross-multiplication |dw:1358451891181:dw| got this ?
anonymous
  • anonymous
i think so, yeah
hartnn
  • hartnn
need example ?
hartnn
  • hartnn
|dw:1358452038527:dw| you try ...
anonymous
  • anonymous
maybe i should just look in a math textbook or something :/
Goten77
  • Goten77
|dw:1358452105344:dw| lesson 2 the derivative
ghazi
  • ghazi
\[4\frac{ 4 }{ 5 }= \frac{ 4*5 +4 }{ 5}=\frac{ 20+4 }{ 5 }=\frac{ 24 }{ 5 }\] @LonelyandForgotten remember this?
anonymous
  • anonymous
@hartnn umm 18 is the answer?
hartnn
  • hartnn
|dw:1358452176435:dw||dw:1358452197271:dw||dw:1358452223444:dw| now ?
anonymous
  • anonymous
@ghazi is that for cross multiplication?
hartnn
  • hartnn
are you understanding the drawings ?
ghazi
  • ghazi
no that is for changing fraction
Goten77
  • Goten77
|dw:1358452384626:dw|
ghazi
  • ghazi
for cross multiplication lets say we have \[\frac{ 2 }{ 3 }=\frac{ x }{ 4 }\] then by cross multiplication we can see that \[2*4=x*3\] and x=2*4/3=8/3|dw:1358452516250:dw| @LonelyandForgotten hope its clear to you now :)

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