aloecheck aloecheck

20-05-2016
Mathematics

contestada

What is the value of y?

4y2 + 8 = 264

± ______

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

Respuesta :

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

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

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