Mathematics
25 Online
OpenStudy (rainbow_rocks03):
PLZ HELP ME!!!!!!!!!!
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OpenStudy (rainbow_rocks03):
OpenStudy (anonymous):
Well the first one is simple, what did we do to find the percentage every time?
OpenStudy (rainbow_rocks03):
ummm
OpenStudy (anonymous):
Just imagine n as the result
OpenStudy (rainbow_rocks03):
im sorry its just i cant think anymore right no, i have been working on school sense 7:30 in the morning
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OpenStudy (rainbow_rocks03):
*now
OpenStudy (anonymous):
Do you just want the answers, or do you want me to continue explaining?
OpenStudy (rainbow_rocks03):
Im trying though, and yes plz explain
OpenStudy (rainbow_rocks03):
I THINK if you explain it will help a little
OpenStudy (anonymous):
k so how much is 73% actually?
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OpenStudy (rainbow_rocks03):
73% = 0.73
OpenStudy (anonymous):
yup and then what did we do? with the .73?
OpenStudy (rainbow_rocks03):
multiply?
OpenStudy (rainbow_rocks03):
Brill, my brain is really fried right now >.<
OpenStudy (anonymous):
YUP thats right
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OpenStudy (anonymous):
So you would multiply 215 and .73!
OpenStudy (rainbow_rocks03):
0.73 * 215 = 156.95
OpenStudy (anonymous):
Yeah but you dont need the answer, the first question is only asking HOW to get to the answer
OpenStudy (anonymous):
So look for one that says .73*215
OpenStudy (rainbow_rocks03):
so my answer would be the second choice
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OpenStudy (rainbow_rocks03):
right?
OpenStudy (anonymous):
Yeah :D
OpenStudy (rainbow_rocks03):
now onto #2
OpenStudy (anonymous):
Ok so a percent is basically a decimal right?
OpenStudy (anonymous):
So like 40% is .40
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OpenStudy (anonymous):
So what is that as afraction
OpenStudy (rainbow_rocks03):
.40 as a fraction?
OpenStudy (rainbow_rocks03):
4/100 ?
OpenStudy (rainbow_rocks03):
btw I have the answer for #3
OpenStudy (anonymous):
No 4/100 is .04, try a little higher
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OpenStudy (rainbow_rocks03):
also here are the ones after #3
OpenStudy (rainbow_rocks03):
umm, idk
OpenStudy (anonymous):
so .40 in letter form is 40 hundreths
OpenStudy (anonymous):
so what is that as a fraction
OpenStudy (rainbow_rocks03):
40/100
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OpenStudy (anonymous):
Yeah :D
OpenStudy (anonymous):
So apply that to #2
OpenStudy (rainbow_rocks03):
my answer is 23/94 = n/100
OpenStudy (anonymous):
YUP
OpenStudy (rainbow_rocks03):
ok
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OpenStudy (rainbow_rocks03):
onto #4
OpenStudy (anonymous):
So what did you get as an answer for the last one on that one
OpenStudy (rainbow_rocks03):
the answer I got for #3 was 34
OpenStudy (anonymous):
Ok so you've been using what we've been talking about which is good
OpenStudy (anonymous):
but thats wrong sorry
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OpenStudy (rainbow_rocks03):
oh, it is?
OpenStudy (anonymous):
Now it's telling you that 85 is 40% OF something
OpenStudy (anonymous):
So you cant multiply there
OpenStudy (rainbow_rocks03):
I searched on google also and 14 people said that is the answer
OpenStudy (anonymous):
Ok so set up the equation here or the ratio or whatever
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OpenStudy (study312):
rainbow I commented on the other post, did you already answer it all?
OpenStudy (rainbow_rocks03):
well 4 people said thats the answer and 14 people agreed that it is the answer
OpenStudy (rainbow_rocks03):
no I havent answered it all
OpenStudy (rainbow_rocks03):
I had more thats why
OpenStudy (anonymous):
\[\frac{ 85 }{ n }=\frac{ 40 }{ 100 }\]
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OpenStudy (anonymous):
Thats what it is asking
OpenStudy (study312):
ok well you can check back to see my comment. I am done for the day so see ya, good luck.
OpenStudy (rainbow_rocks03):
thx
OpenStudy (anonymous):
Yeah rainbow sorry but I rechecked the wording too they're wrong
OpenStudy (anonymous):
Try solving for n in what I gave you
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OpenStudy (rainbow_rocks03):
ugh I just need #4 #5 #6 #7 and #8
OpenStudy (rainbow_rocks03):
im so tired
OpenStudy (rainbow_rocks03):
n * 40 = 40n and 85 * 100 = 8500
OpenStudy (anonymous):
so 8500=40n
OpenStudy (anonymous):
8500/40= 212.5 and that is correct
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OpenStudy (rainbow_rocks03):
ok
OpenStudy (rainbow_rocks03):
#4 next
OpenStudy (anonymous):
It's asking to take the percentage, so just multiply
OpenStudy (rainbow_rocks03):
answer to #4 & #5
OpenStudy (anonymous):
Do you want it?
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OpenStudy (rainbow_rocks03):
so I can just solve 6 7 & 8 because I HAVE to solve those :p and yes plz
OpenStudy (anonymous):
K
OpenStudy (anonymous):
Number 4 is 62.5
OpenStudy (anonymous):
And 5 is 265.614375
OpenStudy (anonymous):
Round and stuff ofcourse
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OpenStudy (rainbow_rocks03):
this is #6
OpenStudy (anonymous):
Ok so for the proportion set it up like I set up #3 earlier
OpenStudy (anonymous):
But substituting the right number
OpenStudy (rainbow_rocks03):
I made it smaller
OpenStudy (anonymous):
OR do you just want an answer?
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OpenStudy (rainbow_rocks03):
I just need the equation on how to solve it
OpenStudy (rainbow_rocks03):
So I can see how to solve it
OpenStudy (anonymous):
Ok so the proportion to solve it is
\[\frac{ 108 }{ x }=\frac{ 36 }{ 100 }\]
OpenStudy (anonymous):
Thats it
OpenStudy (rainbow_rocks03):
I just cross multiply them right?
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OpenStudy (anonymous):
yeah and then isolate the variable and stuff after
OpenStudy (rainbow_rocks03):
ok, just making sure
OpenStudy (rainbow_rocks03):
I forget how to isolate the variable sometimes
OpenStudy (rainbow_rocks03):
can you type it out?
OpenStudy (anonymous):
Ok so what did you get after you cross multiplied?
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OpenStudy (rainbow_rocks03):
I got 10800 & 100n
OpenStudy (anonymous):
Uhh shouldnt be 100n
OpenStudy (rainbow_rocks03):
oh
OpenStudy (rainbow_rocks03):
I am REALLY frustrated right now!
OpenStudy (anonymous):
Look at the cross multiplying, n is across from 36 not 100
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OpenStudy (rainbow_rocks03):
oh