•Summarize the methods used to support scientific ideas and theories.

Biology

1 answer:

11Alexandr11 [23.1K]4 years ago

5 0

They Grab Information to gain Hypothesis , Then test it to get the Scientifical Answer for the problem.

Hope this helps... If not, correct me...

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Given;
x + y + z = 140 meters

According to the proportion theorem,

$\frac{x}{40} = \frac{y}{30}$

Solving for x, using cross multiplication:

$\frac{x}{1} = \frac{40y}{30}$

Similarly,

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solving for z by cross multiplication,

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y/30 = z/35

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y = 30z/35
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Substitutoing z = 7x/8,

224y + (144 × 7x/8) + 147x = 23520

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224y + 273x = 23520
Now,
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(224×3x/4) + 273x = 23520

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Now,
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y = 3x/4
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