Help me The two major types of metal electrical cable are:

A. wire and fibre
B. twisted pair and coaxial
C. twisted pair and fibre optic
D. coaxial and fibre optic

2. What are the most common forms of wireless connection?

A. infrared beams
B. microwaves
C. radio waves
D. all of the above

3. Wi-fi connections have limited range of :

A.10 metres
B.600 metres
C.20 metres
D.300 metres​​​

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

i dont know i just need points

hello from mrbilldoesmath!

answer:

the domain is the set { -2, 0, 2, 3}

discussion:

the domain is the set of x values in the ordered pairs (x,y). taking the x, or first component, of each ordered pair gives   -2, 0, 2, 3.

you,

mrb