Let's say the diameter of the larger gear is "x".
the small one has a diameter of 16cm, we know that, this is 2.5 more than (1/4)x.
the small one has a diameter of 16cm, we know that, this is 2.5 more than (1/4)x.
Need help this is urgent for my final
1 answer:
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Answer:
x = - 1 ± i
Step-by-step explanation:
Given
3x² = - 12 - 6x ( add 6x to both sides )
3x² + 6x = - 12 ( divide through by 3 )
x² + 2x = - 4
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(1)x + 1 = - 4 + 1
(x + 1)² = - 3 ( take the square root of both sides )
x + 1 = ± = ± i
( subtract 1 from both sides )
x = - 1 ± i