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kkurt [141]
3 years ago
5

4. Find the value of the real number y such that

Mathematics
1 answer:
sdas [7]3 years ago
3 0

Step-by-step explanation:

(3 + 2i)(1 + iy)

= 3 + (3y + 2)i - 2y (because i² = -1)

For this to be real, (3y + 2) = 0. => y = -2/3

For this to be imaginary, y can be any real or complex number (except -2/3)

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mrs_skeptik [129]

Answer:

1+.7= 1.7

Step-by-step explanation:


4 0
3 years ago
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What is the amplitude, period, and phase shift of f(x) = -4 sin(2x + π) - 5?
son4ous [18]
F(x) = -4sin(2x + π) - 5

<u>Amplitude</u>
A = -π

<u>Period</u>
<u>2π</u> = <u>2π</u> = π
 B      2

<u>Phase Shift</u>
<u>-C</u> = <u>-π</u> = ≈ 1.57<u>
</u> B      2<u>
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2 years ago
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lina2011 [118]
The answer would be A. <span>The registration fee is $5.50, and the cost per download is $0.95.</span>

Solution
Let x = registration fee
y = cost/downloads

Jack
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Jim
40y + x = 43.50

Thus,
40y + x = 43.50
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for x,
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3 0
3 years ago
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marin [14]

Answer:

Its just 3

Step-by-step explanation:

Because its absolute value.

Hope this helps!

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2 years ago
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