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Aleks [24]
2 years ago
8

(1+i)^2(x+yi)=4+5i Solve for x and y

Mathematics
1 answer:
faust18 [17]2 years ago
7 0

Answer:

x = 5/2

y = -2

Step-by-step explanation:

(1+i)² (x+yi) = 4+5i

(1+2i+i²)(x+yi) = 4+5i

(1+2i-1)(x+yi) = 4+5i

2i(x+yi) = 4+5i

2i²y + 2xi = 4+5i

-2y + 2xi = 4 + 5i

By comparing both sides,

-2y = 4

y = -2,

2x = 5

x = 5/2

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Answer:

p(x) = f(x) - g(x) = -0.04x² + 20.96x - 71

Explanation:

The sales are given by f(x) = 24.96x and the cost are represented by g(x) = 0.04x² + 4x + 71.

Then, the profit is equal to

p(x) = f(x) - g(x)

p(x) = 24.96x - (0.04x² + 4x + 71)

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Therefore, the answer is

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4 0
2 years ago
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uysha [10]

Answer:

9 6/8, 9 3/4. 9.75

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or: 9.75

5 0
4 years ago
Help? With my math please. Will mark brainlist URGENT
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3 years ago
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Answer:

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Step-by-step explanation:

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Answer

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I hope this helps

4 0
3 years ago
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