Uni Stuff > Mathematics

Help with simple maths problem! please

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TrueLight:
hi

can someone explain to me how to solve this maths equation by hand! thanks... and actually tell me what your doing to...thanks

its really simple but lol shutup

something like

= 120/1*10^-7

and something like

=100/0.2*10^-6

thanks

TrueTears:






Other one:






 

TrueLight:
thanks!

can you explain how you got from 100/2/10^7 onwards... and also 120/1/10^7 onwards... thanks

qshyrn:

--- Quote from: TrueLight on November 10, 2009, 10:26:47 pm ---thanks!

can you explain how you got from 100/2/10^7 onwards... and also 120/1/10^7 onwards... thanks

--- End quote ---
when a number divides by a fraction, its the same as multiplying that number by the reciprocal of the fraction (flipping the fraction over)

TrueLight:
ah yeah! lol my brain doesn't retain maths for very long

so how does 10^9/2 get to 5*10^8

where did the 10^8 come from?

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