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shtirl [24]
4 years ago
5

I need a little help i dont understand this question

Mathematics
2 answers:
Mars2501 [29]4 years ago
6 0
You want to subtracts 30 from 180 which is 150, then divide that by 2 to get 75!
Sveta_85 [38]4 years ago
3 0

Answer: The answer would be

75

Step-by-step explanation:

If you do 75+75+30 it would add up to 180 which is what a triangle is worth.

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The focal length F of a lens made by combining two lenses of focal length U and V is given I/F=I/U+I/V
jolli1 [7]

Answer:

a). V=\frac{U.F}{U-F}

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Step-by-step explanation:

Focal length F of a lens made by combining two lenses of different focal lengths U and V will be,

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A). By solving the given formula,

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    V=\frac{U.F}{U-F}

B). If F = 6 and U = 10 then we have to find the value of V.

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    V=\frac{6\times 10}{10-6}

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    Therefore, focal length (V) of the lens = 15 units

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Step-by-step explanation:

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