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Mathematics 7 Online
OpenStudy (anonymous):

(9*10^5)(6*10^?)

OpenStudy (agent0smith):

Change the order to make it easier \[\Large (9*10^5)(6*10^?) = \] \[\Large (9*6)(10^5*10^?)\]

OpenStudy (anonymous):

explain

OpenStudy (agent0smith):

You can change the order of multiplication. It's called commutative.

OpenStudy (agent0smith):

a*b*c = c*b*a or for example, 6*10*9*10 = 6*9*10*10

OpenStudy (anonymous):

why the answer will be 5.4*10^-1

OpenStudy (agent0smith):

was it\[\Large (9*10^5)(6*10^{-7}) =\] since you have a question mark where -7 is... If so, you need to simplify this \[\Large (9*6)(10^5*10^{-7})\]

OpenStudy (anonymous):

could u simplify the answer plz.

OpenStudy (agent0smith):

I'm sure you can do some of it yourself... what's 9*6? for the 10^5*10^-7, you'll have to add the exponents like so: \[\Large (9*6)(10^{5-7})\]

OpenStudy (anonymous):

ok,thanx

OpenStudy (jhannybean):

How did you even know it was -7?

OpenStudy (agent0smith):

@Jhannybean I worked backwards from the answer he gave.

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