Question

If z = 7 - 24i, then the absolute value of z =
(a) 5
(b) 17
(c) 31
(d) 168
(e) 25

Answer 1

for z = a + bi
we want sqrt(a^2 + b^2)

Answer 2

ok

Answer 3

is the answer (e) ?

Answer 4

thanks

Answer 5

Yes, I get 25.

Answer 6

k thanks