Vladgor Vladgor

18-06-2020
Mathematics

contestada

LAST QUESTION with picture pls help

LAST QUESTION with picture pls help class=

Respuesta :

mhanifa mhanifa

18-06-2020

Answer:

2.57 cm

Step-by-step explanation:

sides of full frame with photo:

2x+16 and 2x+10

Area A= (2x+16)(2x+10)

Area of photo alone P= 16*10

As per question: A=2P

(2x+16)(2x+10)= 2*16*10
4(x+8)(x+5)=2*2*8*10
x²+13x+40=80
x²+13x-40=0
solving this we get x= 2.57 cm

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