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vekshin1
3 years ago
8

How to find root hair

Mathematics
1 answer:
dimulka [17.4K]3 years ago
6 0
I'll proceed by evaluating total length and surface area by scanned images. For measurements, I suggest to use winrhizo or any similar software. In this case the most important thing to think about is to use the appropiate acquisition parameters, I mean, to set a good resolution during scanning. Pixels of the aquired image should be smaller than root hairs diameter. Therefore, let me try to suggest you a good acquisition resolution. Making a quick research, it seems that hair root diameters range between 0,012 and 0,017 mm, so I suggest a resolution that will give a pixel dimension of 0,002 mm. Root hair diameters should be composed by 6-8 pixels, that is enough for winrhizo measurements. Resolution is measured in dpi, so in "dots/pixel per inch". A inch is 25,4 mm. We need pixels with a diameter of 0,002 mm, so in 25,4 mm we found 12700 pixels. That means 12700 dpi. It's a very high resolution, you need a good scanner and much space in your computer.
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Answer:

Step-by-step explanation:

Let x = gallons consumed by car 1

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35x+40y = 1850 eq1

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Substituting eq 2 into eq 1,

35x+40(50-x) = 1850

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x+y = 50

30+y = 50

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Car 2 consumes 20 gallons of gas.

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