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Mathematics 8 Online
OpenStudy (anonymous):

https://gyazo.com/5e80437f1cf410e5e8fbe944af4ea7ab

OpenStudy (welshfella):

what you need to remember about scientific notation is that its of the form N * 10^n where N is a number between 1 and 10 ( not including 10)

OpenStudy (anonymous):

i know that

OpenStudy (welshfella):

so for the first one its 2.5 * 3 * 10^-3 * 10^-4 = 7.5 * 10 ^-7

OpenStudy (anonymous):

so 1=A?

OpenStudy (welshfella):

If the first number is not 1-10 you need to multiply/ dividethe 2 parts as appropriate

OpenStudy (welshfella):

yes

OpenStudy (welshfella):

for example;- 15 * 10^ -6:- divide 15 by 10 = 1.5 multiply 10^-6 by 10 = 10^-5 giving 1.5 * 10^-5

OpenStudy (welshfella):

any questions?

OpenStudy (anonymous):

no i understand the concept so 1=A?

OpenStudy (welshfella):

yes

OpenStudy (anonymous):

B?

OpenStudy (welshfella):

do you mean is 2 = B?

OpenStudy (anonymous):

no im asking what is B?

OpenStudy (welshfella):

well you are supposed to match them right so work out 2 and see if it = B.

OpenStudy (anonymous):

okay

OpenStudy (anonymous):

3 = B ;p

OpenStudy (welshfella):

9.6 / 3.2 = 3

OpenStudy (anonymous):

;p typo 9.6 / 3.2 = 3 and 3.2 /10^9 = 10^17 ;p

OpenStudy (welshfella):

yes so 2 = B

OpenStudy (anonymous):

so 2= b ;C

OpenStudy (welshfella):

i think you get it gotta go right now

OpenStudy (anonymous):

thanks m8

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