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3 years ago

Which of the following is a complex number?

Mathematics

2 answers:

Bogdan [553]3 years ago

4 0

The answer is 4 + 3i

It is the only one there with a $\sqrt{-1}$ or i

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const2013 [10]3 years ago

3 0

Answer: First option is correct.

Step-by-step explanation:

Since we have given that

Complex number is the number which contains real number along with imaginary number in the form of a+bi.

It is shown by "Argand plane" in which x-axis represents real number and y-axis represents imaginary number .

Hence, according to option,

4+3i is the only complex number as it has one real number a = 4 and one complex number b =3.

Hence, First option is correct.

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2 years ago

Two of the exterior angles of a triangle are $158^\circ$ and $99^\circ.$ Find the third exterior angle, in degrees.

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Answer:

The third exterior angle is $103^o$

Step-by-step explanation:

Given

$\theta = 158^o$

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Required

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$\theta + \alpha + \beta = 360^o$

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Step-by-step explanation:

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2 years ago

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3 years ago

Round 123,949 to the underlined point. 4 is highlighted

ehidna [41]

$\\ \sf\longmapsto 123,949$

9 is greater than 5

$\\ \sf\longmapsto 123,95$

$\\ \sf\longmapsto 123,9$

9 is greater than 5

$\\ \sf\longmapsto 124$

4 is less than 5

$\\ \sf\longmapsto 12$

2 is less than 5

$\\ \sf\longmapsto 1$

Note

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3 years ago

Read 2 more answers