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babiboo2 babiboo2
  • 08-10-2016
  • Mathematics
Answered

solve 60=10√y-3

A.y= -39
B.y= 39
C.y= 39,-39
D.y= -10,39

Verified Answer :

meeeep1234
meeeep1234 meeeep1234
  • 08-10-2016

B :) hope this helped!

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Anonymous Anonymous
  • 08-10-2016

60=10√(y-3)
60²=(10√(y-3))²
3600=100(y-3)
3600=100y-300
100y=3600+300
100y=3900
y=3900/100
y=39

we have to chek the possible answer:
10√(39-3)=10√36=10(6)=60

Answer: B.  y=39

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