Answer:
I'm sorry but where's the picture
I'm not sure what you mean by "the 3 consecutive numbers of 72".
Do you mean 3 consecutive numbers that ADD UP TO 72 ?
If that's what you want, then you can use this equation:
The middle number . . . . . x
The smallest number . . . . (x-1)
The biggest number . . . . . (x+1)
The equation: (x-1) + (x) + (x+1) = 72 .
Boil that equation down, and you discover that x=24 .
So the 3 numbers are 23, 24, and 25 .
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If that's not what your question means, then this answer
isn't what you need, and you should completely ignore it.
Answer:
8x + 8 = 6x + 20/3
Step-by-step explanation:
They are right except for 12. i think it is C but i could be wrong.
Area of wall = 9 * 12 = 108 ft^2
Width of TV = x
Lenght = 2x
Diagonal of TV = 72 " = 6 ft
x^2+(2x)^2=6^2
x^2+4x^2=36
5x^2=35
x^2=36/5
x=sqrt(36/5)
Width = 2.68 ft.
Length = 2.68 * 5.36 = 14.36 ft^2
Area of wall - area of tv = 108 - 14.36 = 93.64 ft