If 3?5 + ?125 = 17.88, then what will be the value of? 80 + 6?5?
A. 13.41
B. 20.46
C. 21.66
D. 22.35

• 3sqrt(5)+sqrt(125)=17.88
  3sqrt(5)+sqrt(25*5)=17.88
  3sqrt(5)+5sqrt(5)=17.88
  8sqrt(5)=17.88
  sqrt(5)=17.88/8=2.235
  so,
  sqrt(80)+6sqrt(5)=sqrt(16*5)+6sqrt(5)
  =4sqrt(5)+6sqrt(5)
  =10sqrt(5)
  =10*2.25 (i.e sqrt(5)=2.25)
  =22.35
  ans:-D.22.35
• 5 years agoHelpfull: Yes(3) No(0)
• 3sqrt(5)+sqrt(125)=17.88
  3sqrt(5)+sqrt(25*5)=17.88
  3sqrt(5)+5sqrt(5)=17.88
  8sqrt(5)=17.88
  sqrt(5)=17.88/8=2.235
  so,
  sqrt(80)+6sqrt(5)=sqrt(16*5)+6sqrt(5)
  =4sqrt(5)+6sqrt(5)
  =10sqrt(5)
  =10*2.25 (i.e sqrt(5)=2.25)
  =22.35
  ans:-D.22.35
• 4 years agoHelpfull: Yes(0) No(0)
• Ans d
  3√5+√125=17.88
  √80+6√5=22.35
• 3 years agoHelpfull: Yes(0) No(0)