What type of number is 3-77i

Mathematics

2 answers:

grigory [225]3 years ago

6 0

Answer:

Option 3 - complex number

Step-by-step explanation:

Given : Number $3-77i$

To find : What type of number is given ?

Solution :

Real numbers include all rational and irrational numbers.

Pure Imaginary number includes only imaginary term i.e. i

Complex number is the combination of real and imaginary number.

We have given, Number $3-77i$

Where, 3 is the real number and 77i is imaginary number.

So, The number $3-77i$ is a complex number.

Therefore, Option 3 is correct.

MatroZZZ [7]3 years ago

3 0

It is an imaginary number

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Really really need this answer. Please help!

scZoUnD [109]

Use the cosine function.

cos x = 2/12
cos x = 0.167

use the inverse of cosine:

x = 80.405

The answer is C.

Hope this helps :)

4 0

3 years ago

Convert into decimals (use your calculator): a) 6/38 b) 45/55 c) 4/28 d) 35/28 e) 1030/2030

Delicious77 [7]

Answer:

$a.\hspace{3} \frac{6}{38} = 0.15789474\\\\b.\hspace{3} \frac{45}{55} = 0.81818181\\\\c.\hspace{3} \frac{4}{28} = 0.14285714\\\\d.\hspace{3} \frac{35}{28} = 1.25\\\\e.\hspace{3} \frac{1030}{2030} = 0.50738916$

Step-by-step explanation:

Rational numbers, expressed as decimal numbers, are obtained from the operation of division between the integer of the numerator and the integer of the denominator. Then:

$a.\hspace{3} \frac{6}{38} = 6\div38 = 0.15789474\\\\ b.\hspace{3} \frac{45}{55} = 45\div55 = 0.81818181\\\\c.\hspace{3} \frac{4}{28} = 4\div28 = 0.14285714\\\\ d.\hspace{3} \frac{35}{28} = 35\div28 = 1.25\\\\ e.\hspace{3} \frac{1030}{2030} = 1030\div2030 = 0.50738916$