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ValentinkaMS [17]
3 years ago
13

How do you find (2+4i)^3 in rectangular form?

Mathematics
2 answers:
marshall27 [118]3 years ago
8 0

(2+4i)^3=8+48i-96-64i=-88-16i

Paha777 [63]3 years ago
4 0

note that (a + b)³ = a³ + 3a²b + 3ab² + b³

(2 + 4i)³ ← with a = 2 and b = 4i noting that i² = (√-1)² = -1

= 2³ + (3 × 4 × 4i ) + ( 3 × 2 × 16i² ) + ( 4i )³

= 8 + 48i  - 96 - 64i

= - 88 - 16i




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4 0
3 years ago
Consider the following system of equations:
Mashutka [201]

Answer:

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Step-by-step explanation:

We are given that

y=-2x+3

y=x-5

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3x=8

x=\frac{8}{3}

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y=-2(\frac{8}{3})+3=-\frac{16}{3}+3=-\frac{-7}{3}

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Answer:Liney=-2x+3 intersects line y=x-5

6 0
3 years ago
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aivan3 [116]
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6 0
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jekas [21]

Answer:

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The test statistics

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x = 0.1235 - 0.10 / \sqrt{0.10 * 0.90 / 527}

x = 0.0235 / \sqrt{0.09 / 527}

x = 0.0235 / \sqrt{0.00017077798}

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Conclusion: The data provide sufficient evidence that older people are more likely to be victimized.

7 0
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