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Alex Ar [27]
3 years ago
7

What is the answer to this multiple choice question?

Mathematics
1 answer:
evablogger [386]3 years ago
6 0

Answer:

All expressions are correct

Step-by-step explanation:

9z+7z = 16 z

We need to find an expression ( or expressions ) that are equal to 16z

6z+3z+ 7z = 16z  Correct

z+8z+7z = 16z   Correct

z*16 = 16z  Correct

21z+ -5z = 16z  Correct

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Express √3 + i in polar form:

|√3 + i| = √((√3)² + 1²) = √4 = 2

arg(√3 + i) = arctan(1/√3) = π/6

Then

√3 + i = 2 (cos(π/6) + i sin(π/6))

By DeMoivre's theorem,

(√3 + i)³ = (2 (cos(π/6) + i sin(π/6)))³

… = 2³ (cos(3 • π/6) + i sin(3 • π/6))

… = 8 (cos(π/2) + i sin(π/2))

… = 8i

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2 years ago
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Answer:

The answer is option A

Hope this helps

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3 years ago
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The average attendance at a local high school’s football games went down from 2,000 people to 1,840. What was the percent of dec
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Answer:

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irdk

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