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joja [24]
3 years ago
15

What is 221,000,000,000,000,000,000 expressed in scientific notation? a.2.21 × 1021 b.2.21E20 c.2.21E21 d.2.21E-20 e.2.21 × 10-2

1 f.2.21 × 10-20 g.2.21 × 1020 h.2.21E-21
Mathematics
2 answers:
vodomira [7]3 years ago
8 0

Answer:

The Answer Is <em>B</em> and <em>G</em>

Step-by-step explanation:

I went and clicked all the answers and found out these two were the correct answer.

nekit [7.7K]3 years ago
4 0

Answer:

221,000,000,000,000,000,000 = 2.21 x 10^20

therefore, the answer is b

Step-by-step explanation:

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Sliva [168]
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Define x :
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Let the number be x.

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Construct equation:
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<span>Nine more than the product of 4 and the number is 73
</span>⇒4x + 9 = 73

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Solve for x:
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4x + 9 = 73
4x = 73 -9
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Answer: Ken's number is 16.
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lidiya [134]

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other formula

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3 years ago
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Alex73 [517]

Answer:

Step-by-step explanation:

In each case we find the discriminant b^2 - 4ac.

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#54:  (4)^2 - 16 = 0.  We have two equal, real roots.

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