Classify the number 11-6i

a) real number
b) complex number
c) imaginary number

The number is B) complex number.

Here, let’s first see the type of numbers given in the options:

A) Real number:

The numbers which are used to denote the distance is real numbers. The numbers which come under real numbers is rational numbers and irrational numbers.

For example, -5, 2/3, , and so on.

B) Complex number:

The complex numbers are always written as:

Where ‘a’ and ‘b’ are real numbers and ‘i’ is imaginary number. Complex number is a set of all the numbers.

C) Imaginary number:

The numbers which doesn’t exist is imaginary number.

For example, the square is always positive, we cannot get a negative number as a square. So, the square root of the negative number becomes an imaginary number because that number doesn’t exist.

The imaginary number is denoted with ‘i’ where,

So, the given number is a complex number which has real number ‘11’ and imaginary number ‘6i’.

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

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