find the value of r.
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10Cr=20Cr+1
=>20Cr-10Cr+1=0
=>10Cr+1=0
=>r= -1/10C
Nuethera:
I will send u an invite
Actually I used my mother's so I can't give
oh so why don't you make one your mom won't mind either it Gmail id
every 8th grader should have for study materials online and all
Excuse me!!! My 9 completed dear
I am in 10 th now not 8 th
i meant everyone should have their own email by 8th grade
u r on 10th u dont have email yet
how?
how?
anyways how 10th?
??????
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