Mathematics
13 Online
OpenStudy (anonymous):
2/3n=10
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OpenStudy (anonymous):
n=15
OpenStudy (anonymous):
cross multiply, 2/3n=10/1
30n=2
n=15
OpenStudy (amistre64):
cross multiply?
OpenStudy (amistre64):
sounds foil-ish to me, and pedmasical too
OpenStudy (anonymous):
2(1)=10(3)
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OpenStudy (oaktree):
No, that's all wrong. n=1/15
OpenStudy (amistre64):
id divide both sides by 10, and make n the reciprocal
OpenStudy (anonymous):
thank you that helped a lot!
OpenStudy (oaktree):
The correct answer is n=1/15.
OpenStudy (amistre64):
2
--- n = 10
3
2
--- n = 1
30
n = 30/2 = 15
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OpenStudy (oaktree):
Multiply both sides by 3n, and then you have 30n=2. Then divide by 30 on both sides, and you have n=2/30, or 1/15.
OpenStudy (anonymous):
its not 1/15, you multiply 3n by the numerator which is 10
OpenStudy (oaktree):
Check my answer, then! 2/3(1/15)=2/(3/15)=2(15)/3=30/3=10. I tell you, I'm right!!
OpenStudy (oaktree):
15, however, works out to 3/45, which is by no way 10.
OpenStudy (oaktree):
Beat that.
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OpenStudy (anonymous):
ok, 2/3 times (1/15)=1/45
2/3 times 15=10
OpenStudy (oaktree):
No, it isn't 2/3 times (1/15), it is (2/3) times (1/(1/15)). The 1/15 is in the denominator!
OpenStudy (oaktree):
amk11, you have to admit that I'm right.
OpenStudy (anonymous):
u r not multiplying the reciprocal
OpenStudy (oaktree):
Yes, I am!!! Stop being stubborn!
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OpenStudy (anonymous):
lol :p
OpenStudy (anonymous):
i still think its 15, i even checked the calculator nd it says im right