soshiciety soshiciety
  • 03-09-2017
  • Mathematics
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Grade 9 mathematics please help asap. Thank you so much!!!

Grade 9 mathematics please help asap Thank you so much class=

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coolstick
coolstick coolstick
  • 03-09-2017
If the side of square P is x and the side of square Q is y, we have x+y=26. In addition, 3*the perimeter of P+8*4y=3*4x+32y=12x+32y=492.

We have 
x+y=26
12x+32y=492

Multiplying the first equation by -12 and adding it to the second, we get 
20y=180 and dividing by 20 we get y=9. Plugging it into the first equation, we get 26-9=17=x. Since the area of square P is x^2 and Q is y^2,
x^2+y^2=19^2+7^2=410=the sum of the squares
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