anonymous
  • anonymous
13^2= square root or 177+b^2?????
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
okey dokey
anonymous
  • anonymous
169 = 177+b^2 subtract 177 from both sides to isolate b^2
anonymous
  • anonymous
oops, sorry. I read your post wrong

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anonymous
  • anonymous
\[169 = \sqrt{177+b ^{2}}\]
anonymous
  • anonymous
square both sides to find \[28561=177+b ^{2}\]
anonymous
  • anonymous
subtract 177 from both sides: 28394=b^2
anonymous
  • anonymous
take the square root of both sides to solve for b \[\sqrt{28384} = b = 168.476\] (approximately)
anonymous
  • anonymous
oh so i don't square root the 177 til the end???
anonymous
  • anonymous
was the original problem \[13^{2}=\sqrt{177+b ^{2}}\]?
anonymous
  • anonymous
yes
anonymous
  • anonymous
We never had to find the square root of 177 by itself
anonymous
  • anonymous
If you square a square root, the square root goes away. That's what I did to find 28561=177+b^2
anonymous
  • anonymous
from there I subtracted 177 from both sides to get the variable by itself
anonymous
  • anonymous
so then the equation becomes \[28384 = b ^{2}\]
anonymous
  • anonymous
then to solve for b, i took the square root of both sides

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