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Natali5045456 [20]
2 years ago
8

Which of the following is an example of a complex number that is not in the set of real numbers?

Mathematics
1 answer:
ExtremeBDS [4]2 years ago
8 0

A complex number has a real and an imaginary part

4 + 9i is a complex number

A complex number is represented as:

a + bi

Where:

<em />a \to<em> real</em>

<em />bi \to<em> imaginary</em>

<em />

By comparing the options to a + bi;

-7 and 2 + \sqrt 5 are not complex numbers

This is so because they do not have imaginary parts

However,

4 + 9i is a complex number

Because; 9i is imaginary

Read more about complex numbers at:

brainly.com/question/19007885

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Marat540 [252]
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4 years ago
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alex41 [277]
<h2><u>Question</u><u>:</u><u>-</u></h2>

A fruitseller bought 50kg of the fruits. He sold 30kg of fruits for the cost price of 35kg of fruits and he sold the remaining quantity for the cost Price of 18kg of fruits. calculate his profit or loss percent in the total transaction.

<h2><u>Answer</u><u>:</u><u>-</u></h2>

let the cost price be 50x

→he sells 30kg of fruits on it's CP of 35 kg

→CP of 30kg fruits = 30x

→SP of 35kg fruits = 35x

→remaing fruits are 20kg

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→CP of 20kg fruits = 20x

→SP of 20kg fruits = 16x

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→ 51-50

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<h2 /><h2><u>Now,</u></h2>

→ Profit% = gain/CP × 100

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→ 2%

Hence the fruit seller had a profit% of 2%.

7 0
3 years ago
How many thirds are in 3 2/3
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3= 3 thirds + 3 thirds + 3 thirds = 9 thirds
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3 years ago
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Answer:

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