Your test scores in science are 83 and 87. What possible scores can you earn on your next test to have a test average between 85 and 90, inclusive?
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OpenStudy (anonymous):
@confluxepic
OpenStudy (confluxepic):
It depends. @KALIAN
OpenStudy (anonymous):
watch mean ?
OpenStudy (texaschic101):
(83 + 87 + x) / 3 = 85
(170 + x) / 3 = 85
170 + x = 255
x = 255 - 170
x = 85
so he needs an 85 to make an 85
(83 + 87 + x) /3 = 90
(170 + x) / 3 = 90
170 + x = 270
x = 270 - 170
x = 100
so he needs a 100 to make a 90
OpenStudy (texaschic101):
so I guess the answer would be : at least 85 but no more then 100
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OpenStudy (confluxepic):
It has to be over 85.
OpenStudy (confluxepic):
About 90.
OpenStudy (anonymous):
so 85 to what ?
OpenStudy (texaschic101):
oh..between 85 and 90....answer would be any number between 85 and 100
OpenStudy (anonymous):
Ok Thanks guys :) Who deserves the medal . . .
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OpenStudy (confluxepic):
I gave @texaschic101 one.
OpenStudy (texaschic101):
your choice
OpenStudy (confluxepic):
I doesn't really matter.
OpenStudy (anonymous):
hmmm
OpenStudy (confluxepic):
I don't really care.
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OpenStudy (texaschic101):
I will give confluxepic one
OpenStudy (confluxepic):
Oh well.
OpenStudy (confluxepic):
Problem solved.
OpenStudy (texaschic101):
:) happy,happy,happy
OpenStudy (anonymous):
k i give chic one, chic gives flux one
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