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charle [14.2K]
3 years ago
14

What is the real part of the complex number -3+9i

Mathematics
1 answer:
VikaD [51]3 years ago
8 0

The real part of given complex number -3 + 9i is -3

<em><u>Solution:</u></em>

We have to find the real part of complex number -3 + 9i

A Complex Number is a combination of real Number and an imaginary Number

<em><u>The general form of complex number is:</u></em>

a + bi

Where "a" and "b" are real numbers and i is the unit imaginary number

The given complex number is:

-3 + 9i

On comparing the above complex number with general form of complex number we get,

Real part = -3

Thus real part of given complex number is -3

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Solve. 2 (x - 1/2) = 3 (5 - 2x) show the steps in your solution.
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Question 1.). Solve:

2 (x - 1 / 2) = 3 (5 - 2x)

Simplify both sides of equation:

2( x - 1 / 2 ) = 3(5 - 2x )

(2) (x) + (2) ( -1 / 2 ) = (3) (5) + (3) ( -2x )


Distribute:

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Add 6x to both sides:

2x - 1 + 6x = -6x + 15 + 6x

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Add 1 to both sides:

8x - 1 + 1 = 15 + 1

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Divide both sides by 8:

8x / 8 = 16 / 8

Answer: 2 (x - 1 / 2) = 3 (5 - 2x) ==========> x = 2











Question 2.).

M =======> Amount Malik need

Solution: =========> m ≥ 5

Inequality ========> 8 + 7 + 10 + m ≥ 30

25 + m ≥ 30

Interpretation ==========> Malik needs at least, $5 .00 to get to, $30.00 or more.

Is the solution reasonable ===========> YES





Hope that helps!!!!! : )



4 0
3 years ago
Read 2 more answers
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