What type of number is 3-77i

Option 3 - complex number    

Step-by-step explanation:

Given : Number

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  

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

So, The number is a complex number.

Therefore, Option 3 is correct.

b. 24 mm

step-by-step explanation:

use the pythagorean theorem.

a^2 + b^2 = c^2

a^2 + 7^2 = 25^2

a^2 + 49 = 625

a^2 = 576

a = 24

answer: b. 24 mm

it would be 6xy and -16xy.