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Mathematics 8 Online
OpenStudy (anonymous):

PLEASE HELP WILL GIVE MEDAL, FAN, AND TESTIMONIAL!

OpenStudy (durply):

go ahead

OpenStudy (anonymous):

OpenStudy (anonymous):

@InExileWeTrust

OpenStudy (xapproachesinfinity):

the last one can be found using proportion 100=4 750=x x=(750 times 4)/100

OpenStudy (xapproachesinfinity):

hmm second i guess proportions too

OpenStudy (xapproachesinfinity):

actually the second is two equations that you need to solve

OpenStudy (xapproachesinfinity):

well seems onece again i'm wrong proportions works with the second 22 out of 50 are females out of 800 x=800 times 22 all divided by 50

OpenStudy (xapproachesinfinity):

see how much is that

OpenStudy (anonymous):

22 divided by 50?

OpenStudy (xapproachesinfinity):

noo 800 times 22 all divided by 50

OpenStudy (xapproachesinfinity):

let's the first...

OpenStudy (anonymous):

352

OpenStudy (math&ing001):

First one, you have 30 fish among 84, that's \(\frac{ 30*100 }{ 84 } = 35.7\)% of total fish taged, and you need to find what's the number at 100%. Second, same thing 22 females out of 50, that's 44%. Find 44% of 800. Last 4 wires are defective out of 100, that's 4% defective wires, find 4% of 750.

OpenStudy (xapproachesinfinity):

in case you got confused my way and his are the same alright proportions are tied to percentages :)

OpenStudy (xapproachesinfinity):

you still get the same answers

OpenStudy (xapproachesinfinity):

woow the guy is gone i'm speaking to my self lol

OpenStudy (anonymous):

so question 5 is 352

OpenStudy (xapproachesinfinity):

yes

OpenStudy (anonymous):

what about questions 6 and 4?

OpenStudy (xapproachesinfinity):

6 i answer see above 4 the @math&ing001 answered you

OpenStudy (xapproachesinfinity):

6 same way you get 30

OpenStudy (anonymous):

ok thanks

OpenStudy (xapproachesinfinity):

no problem

OpenStudy (anonymous):

for #4 i got A?

OpenStudy (xapproachesinfinity):

seems good to me

OpenStudy (math&ing001):

Not quite... if the fish he tagged (180) represents 35.7% of the total, don't you think the number of total fish would actually be bigger ?

OpenStudy (math&ing001):

120*

OpenStudy (anonymous):

ya it should

OpenStudy (anonymous):

i think its B or C cause D is to big right?

OpenStudy (xapproachesinfinity):

i must say the language used in the first throws a bit off and that was the reason i skipped it in the first place

OpenStudy (xapproachesinfinity):

me*

OpenStudy (xapproachesinfinity):

in other words i didn't quite understand the problem

OpenStudy (math&ing001):

Well we shouldn't be guessing if we can calculate: 120 is 35.7% of the total, so the total would be 120*100/35.7

OpenStudy (anonymous):

i got C

OpenStudy (anonymous):

@xapproachesinfinity could you give @math&ing001 a medal so that i could give you a medal, since you both were really a big help?

OpenStudy (xapproachesinfinity):

i did give him a medal

OpenStudy (anonymous):

Thanks

OpenStudy (xapproachesinfinity):

no problem

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