Just subtract high to low then put the subtracted number over the first population and divide to get a decimal,then multiply decimal by 100 to get the answer in percent
The magnification factor is given as

. Therefore multiplying this by the spider's actual length will give its apparent length.

This gives an apparent length of 12,000 mm.
Since 1,000 mm = 1 m, this apparent length is also equivalent to 12 m.
X = 4(cosθ - cos²θ) = 4cosθ - 4cos²<span>θ
</span>dx/dθ = -4sinθ + 8sinθcosθ = -4sinθ(1 - 2cos<span>θ)
dy/d</span>θ = 4(cosθ - cos²θ + sin²θ) = 4(cos<span>θ - 1)
</span>∴dy/dx = 4(cosθ - 1)/-4sinθ(1 - 2cosθ) = 1-cosθ/(sinθ - 2sinθcosθ<span>)
Now, we're finding a horizontal tangent, which is when dy/dx = 0 (horizontal tangent).
1-cos</span>θ/(sinθ - 2sinθcosθ) = 0
1-cosθ = 0
cosθ = 1
θ = 0, 360 in the interval [0, 360].
At θ = 0, x = 0, y = 0
Only points in the open interval [-2π, 2π] are at (0, 0), unless I made a mistake somewhere.
12 bottles = 6 liters
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Find 1 bottle
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12 bottles = 6 liters
1 bottle = 6 ÷ 12
1 bottle = 0.5 liters
1 bottle = 500 ml
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Answer: 1 bottle = 500 ml
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Let first mechanic worked for X and second be Y.
So, X + Y = 25
X = 25-Y
And total they charged-
45X + 55Y = 1175
5 (9X + 11Y) = 235 * 5
(9X + 11Y) = 235
11Y = 235-9X
From fist statement: X=25-Y
11Y = 235-9(25-Y)
11Y = 235-225+9Y
11Y = 10+9Y
11Y - 9Y = 10
2Y = 10
Y= 10/2
Y=5 hours
X=25-Y
X=25-5
X=20
X worked for 20 hours and Y for 5 hours.
PS. Moral of the story- You can say Y was lazy but still charged more than Y. Just kidding!