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PilotLPTM [1.2K]
3 years ago
11

One body of water covers approximately 70 million square miles. another covers approximately 36 million square miles. what perce

nt of the area covered by the first sea is the area covered by the second?
Mathematics
1 answer:
natali 33 [55]3 years ago
7 0
The percent of the area covered by the first sea is covered by the second is approximately 51.43%. To solve this, you simply divide the area of the first sea (70 million) by the area of the second (36 million). This looks like this: 36000000/70000000. To simplify, you use the ratio 36/70, which will get you the same answer. 
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Direct contr

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<h3><u><em>3) Theoretically, if the spinner is spun 150 times</em></u></h3><h3><u><em>how many times would you expect to get an</em></u></h3><h3><u><em>even number?</em></u></h3>

<u><em></em></u>

There are 12 equal sections, getting an even numbers is a ½ chance. ( same as odd numbers)

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In addition, this is theoretical probabilty, it doesn't require experiments.

<h3><u><em>4) Based on the experiment, if the spinner is</em></u></h3><h3><u><em>spun 150 times, how many times would you</em></u></h3><h3><u><em>expect to get an even number?</em></u></h3>

Getting a 2: ⁴⁄₆₀ or ¹⁄₁₅

Getting a 4: ³⁄₆₀ or ¹⁄₂₀

Getting a 6: ⁷⁄₆₀

Getting a 8: ³⁄₆₀ or ¹⁄₂₀

Getting a 10: ⁵⁄₆₀ or ¹⁄₁₂

Getting a 12: ²⁄₆₀ or ¹⁄₃₀

Chance of picking a even number using 60 tries:

⁴⁄₆₀ + ³⁄₆₀ + ⁷⁄₆₀ + ³⁄₆₀ + ⁵⁄₆₀ + ²⁄₆₀ = ⁴ ⁺ ³ ⁺ ⁷ ⁺ ³ ⁺ ⁵ ⁺ ²⁄₆₀ = ²⁴⁄₆₀ or ⅖

Picking a even number using 150 tries:

⅖ · 150 = 60 times

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