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zhenek [66]
2 years ago
14

0.00002165 in scientific notation.

Mathematics
1 answer:
USPshnik [31]2 years ago
8 0

Answer:

2.165 × 10⁻⁵

Step-by-step explanation:

Move the decimal -5 places to the right. For every scientific notation, 10 is the default number you are <em>multiplying the decimal by.</em> The exponent is the number of places you moved the decimal point. The exponent is positive when moving left, negative when moving right.

<em>Hope it helps!</em>

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Answer:
CD = x = 4 units

Explanation:
We are given that the two triangles are similar. This means that we can set the similarity proportionality as follows:
\frac{BC}{CD} =  \frac{CA}{CE} =  \frac{AB}{ED}

W e have:
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Substitute in the above proportionality and solve for x as follows:
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5x = 20
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Based on he above:
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Hope this helps :)
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