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Mazyrski [523]
3 years ago
14

Find the sum of 3 - 7i and 8 + 4i. 11 - 3i 11 + 3i 22 - 8i -22 + 8i

Mathematics
2 answers:
klio [65]3 years ago
6 0

Answer:

11 -3i

First option is correct.

Step-by-step explanation:

We have to find the sum of the complex number 3 - 7i and 8 + 4i.

In adding two complex numbers, real part gets added with the real part and the imaginary part gets added with the imaginary part.

For the first complex numbers 3 - 7i, we have

real part = 3

imaginary part = -7i

For the second complex numbers 8 + 4i, we have

real part = 8

imaginary part = 4i.

Hence, the sum of the complex numbers is given by

3 - 7i + 8 + 4i

= (3+8) +(-7+4)i

= 11 -3i

First option is correct.

Debora [2.8K]3 years ago
5 0
3 - 7i + 8 + 4i = 3 + 8 - 7i + 4i = 11 - 3i.

The answer is A, 11-3i.
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Answer:

Step-by-step explanation:

one

The only really certain way of getting an odd integer is to do 2k + 1. Therefore the answer should be something like 2k+1, 2k+3, 2k + 5

The best I can do for the first one is to assume that k is odd and that the answer is k + 10, k+12, k+14, but I would ask your instructor if this is merely the best answer out of a poor lot or if the question really has no answer.

Two things should be noted.

1. k has to be odd.

2. The first choice has to give consecutive integers because what is added on is 2 3 and 4. Those numbers are consecutive.

Two

k+1, k+2, k+3. See point 2 above. k is a constant and any number. 1,2,3 are consecutive so the results are consecutive. Even if k < 0 the numbers will be consecutive.

k= - 10

k+1 = - 9

k+2 = -8

k+3 = - 7

These are consecutive.

Your first choice will give either consecutive odd or even numbers depending on what k is.

If k = even, then k+6, k+ 8, k+10 will all be even.

If k = odd then the givens will be odd.

4 0
3 years ago
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Answer:

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Step-by-step explanation:

Simplify the following:

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