Select the correct answer from the choices given

(13 + 4i) +n=0

what is n?

0

1

0 -13 + 4i

-13 - 4i

Option D.

Step-by-step explanation:

(13 + 4i) is a complex number which has a real part 13 and 4 as an imaginary part. Value of 'i' is considered as .

Now the equation given in the question is (13 + 4i) + n = 0

which represents a complex number (13 + 4i) has been added to n but the sum of both is zero.

That means n is also an imaginary number having opposite sign.

So, n = -(13 + 4i)

n = -13 - 4i

Therefor, Option D. will be the answer.

first, we define the variables:

x: number of years after 1950

f (x): amount of vinyl sold.

then, with the variables defined, we have:

68594 vinyl records were sold in 1958 > f (8) = 68594

91299 vinyl records were sold in 1961 > f (11) = 91299

38720 vinyl records were sold in 1952 > f (2) = 38720

161743 vinyl records were sold in 1967 > f (17) = 161743

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step-by-step explanation: