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aloecheck
aloecheck aloecheck
  • 20-05-2016
  • Mathematics
Answered

What is the value of y?


4y2 + 8 = 264


± ______


note: the 2 next to the y is an exponent.

Verified Answer :

missy67433
missy67433 missy67433
  • 20-05-2016

4y^2+8-8=264-8
4y^2/4=256/4
y^2=64
Sqaure root 64
Y=8

Answer Link
apologiabiology
apologiabiology apologiabiology
  • 20-05-2016

4y^2+8=268

remember you can do anything to an equaiotn as long as you do it to both sides

isolate variable

4y^2+8=264
minus 8 both sides
4y^2+8-8=264-8
4y^2+0=256
4y^2=256
divide both sides by 4
y^2=64
sqar both sides
y=+/-8


8 goes in blank

Answer Link

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