amadoukamara85
amadoukamara85 amadoukamara85
  • 23-08-2016
  • Mathematics
contestada

solve each equation by taking square roots

10p^2 +20=1490

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Аноним Аноним
  • 23-08-2016
[tex]10p^2 +20=1490[/tex]  

[tex] 10p^2=1490-20 [/tex]        [tex]Subtract \ 20 \ from \ both \ sides[/tex]

[tex]10p^2=1470 [/tex] 

[tex]p^2= \dfrac{1470}{10} [/tex]         [tex]Divide \ both \ sides \ by \ 10[/tex]

[tex]p^2=147[/tex] 

[tex]p=+ \sqrt{147} [/tex]       [tex]Take \ the \ square \ root \ of \ both \ sides[/tex]

[tex]p=+7 \sqrt{3} [/tex]
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avivice avivice
  • 23-08-2016
10p^2+20=1490
1[tex] \sqrt{10p^{2} =1470} 10p=38.34 p=3.834 [/tex]0p^2=1470
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