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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: EagleWings on November 03, 2013, 05:42:11 pm

Title: Not sure where I've gone wrong....
Post by: EagleWings on November 03, 2013, 05:42:11 pm
So as the title says I don't know what I've done. In the attached picture the question I am referring to is b and it has my workings. The answers says I should've done average age = .09 x log(20,000)=27.2 rounded. Where the heck did .09 come from??
Title: Re: Not sure where I've gone wrong....
Post by: Cort on November 03, 2013, 05:49:39 pm
So as the title says I don't know what I've done. In the attached picture the question I am referring to is b and it has my workings. The answers says I should've done average age = .09 x log(20,000)=27.2 rounded. Where the heck did .09 come from??

Just did the question. Your working should be correct. Must've been an error.
Title: Re: Not sure where I've gone wrong....
Post by: EagleWings on November 03, 2013, 05:53:17 pm
Oh ok. Thanks:)
Title: Re: Not sure where I've gone wrong....
Post by: sjayne on November 03, 2013, 06:02:46 pm
it doesnt seem to work on my calculator :/ is it log 10 (20000) ?

never mind!! problem with settings.
Title: Re: Not sure where I've gone wrong....
Post by: souka on November 03, 2013, 06:24:41 pm
Where did you get your answers? According to itute its 27.7, not 27.2  ???
Title: Re: Not sure where I've gone wrong....
Post by: souka on November 03, 2013, 06:48:22 pm
lol vcaa did it again
Title: Re: Not sure where I've gone wrong....
Post by: EagleWings on November 03, 2013, 07:09:41 pm
Yep VCAA... Where did the get they .09 from though?? I hope it is just VCAA otherwise I guess my calc is screwed for tomorrow...
Title: Re: Not sure where I've gone wrong....
Post by: sjayne on November 03, 2013, 07:39:36 pm
Maybe they were using a weird method that we can't comprehend
it should just be 2.39+5.89*log10(20000) :/