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Tatiana [17]
3 years ago
15

Solve the problem.

Mathematics
1 answer:
krok68 [10]3 years ago
7 0

Answer:

b

Step-by-step explanation:

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which expression represents purely real numbers and which expression represents non-real complex number?​
Lyrx [107]

Answer:

Step-by-step explanation:

Complex numbers are the numbers represented by the expression = a + bi

Here a = real part of the number

bi = imaginary part

a and b are the real numbers.

i^9=(i^2)^4.(i)

    =(-1)^{4}.i [Since, i^2=-1]

    =i

Therefore, its a non real complex number.

2 - \sqrt{-49} = 2-\sqrt{(-1)(7)^2}

               = 2-7\sqrt{-1}

               = 2-7i

This number is a Non real complex number.

\sqrt{(-18)^2}=18\sqrt{-1}

              = 18i

It's a non real complex number.

3 + 2i

It's a non real complex number.

-289

It's a purely real number.

4-32i^2=4-32(-1)

             = 4 + 32

             = 36

It's a purely real number.

6 0
3 years ago
What is the vertex? <br> What is the domain? <br> What is the range
kati45 [8]

domain-x intercept

range-y intercept

3 0
3 years ago
Example
saul85 [17]

Answer:

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6 0
2 years ago
A window shaped like a parallelogram has an area of 30 square feet. The height of the window is 4
Viefleur [7K]

Answer:

The base of the window is 7.5 feet long.

Step-by-step explanation:

The area of a parallelogram can be found with the formula A = bh

Plug in the known values to get 30 = 4b

30 = 4b

30/4 = b

7.5 = b

8 0
3 years ago
Determine if the two figures are congruent and explain your answer.
forsale [732]
The two figures are congruent because the side lengths are the same, therefore making the angle measures the same.
3 0
3 years ago
Read 2 more answers
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