Question

last precalc question?

Answer 1

A and C ?

Answer 2

modulus = r = sqrt(a^2 + b^2)
= sqrt(5^2 + 5^2) = sqrt(25 + 25) = sqrt(50) = 5 sqrt(2)
so C is correct

then
a + ib can be graphed as the point (a, b)
this would mean
(-5, 5) is graphed as


where the quadrants are labeled as


therefore quadrant 2 is also correct

Answer 3

This means that both of your answers are correct :)

Answer 4

yay, thanks!