Question

What is true about the complex number -5 + 5i? Check all that apply.

A. The modulus is 10.
B. It lies in quadrant 2.
C. It lies in quadrant 4.
D. The modulus is 5 square root of 2.

Answer 1

b

Answer 2

any ideas for what quadrant it is in? graph it and you will see

Answer 3

B is not the only correct answer...

Answer 4

its B i graphed it.

Answer 5

but im not sure if the other answers are correct like you said @satellite73

Answer 6

ok good
now do you know how to take the modulus

Answer 7

i dont know how to take the modulus sorry

Answer 8

\[|a+bi|=\sqrt{a^2+b^2}\]

Answer 9

a=-5 b=5?

Answer 10

yes, but you can ignore the minus sign if you like

Answer 11

since it will go away when you square it

Answer 12

so a and b are both 5?

Answer 13

yes

Answer 14

well actually \(a=-5\) as you said, but \((-5)^2=25\) just like \(5^2=25\)

Answer 15

oh i see it lol