Bill needs to build a rectangular sheep pen
2 answers:
Answer:
£57.6
Step-by-step explanation:
Given :The pen must have a perimeter of 24 m
Every half meter of fencing costs him £1.20
To Find : Work out the cost of the fence used to make the sheep pen.
Solution :
Cost of fencing 0.5 m = £1.20
Cost of fencing 1 m =
The pen must have a perimeter of 24 m
So, cost of fencing 24 m =
Hence the cost of the fence used to make the sheep pen is £57.6
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Answer:
y = - (x - 1)² + 2
Step-by-step explanation:
Any point (x, y) on the parabola is equidistant from the focus and the directrix.
Using the distance formula
= | y - 6 |
Square both sides
(x - 1)² + (y + 2)² = (y - 6)² ( expand the factors in y )
(x - 1)² + y² + 4y + 4 = y² - 12y + 36 ( subtract y² - 12y from both sides )
(x - 1)² + 16y + 4 = 36 ( subtract 4 from both sides )
(x - 1)² + 16y = 32 ← subtract (x - 1)² from both sides )
16y = - (x - 1)² + 32 ( divide all terms by 16 )
y = - (x - 1)² + 2