X=root(12+root(12+root(...)))
x^2=12+root(12+root(12+root(...)))
x^2=12+x
x^2-x-12=0
(x+3)(x-4)=0
X=4
Yea Syd is right it has to be 5 + u
A=pi times r•r
A=pi (9•9)
A=254.47
Foot? I think that's right.
Let the number of large chairs be x and small chairs be y
40x + 30y = 26 x 60 = 1,560 . . . . (1)
80x + 75y = 57 x 60 = 3,420 . . . . (2)
(1) x 2 => 80x + 60y = 3,120 . . . . (3)
(2) - (3) => 15y = 300 => y = 300/15 = 20
From (2), 80x + 75(20) = 3,420 => 80x + 1,500 = 3,420 => 80x = 3,420 - 1,500 = 1,920 => x = 1,920/80 = 24
Therefore, the company should produce 24 large chairs and 20 small chairs.
