SOLUTION: What is the absolute value of: {{{ 3 - 8i }}}? A){{{ 9 }}} B){{{ 64 }}} C) square root of {{{ 55 }}} D) square root of {{{ 73 }}}

Algebra ->  Test -> SOLUTION: What is the absolute value of: {{{ 3 - 8i }}}? A){{{ 9 }}} B){{{ 64 }}} C) square root of {{{ 55 }}} D) square root of {{{ 73 }}}      Log On


   



Question 1071887: What is the absolute value of: +3+-+8i+?
A)+9+
B)+64+
C) square root of +55+
D) square root of +73+

Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
The answer is D
:
| 3 - 8i | = square root( real part of (3 - 8i)^2 + imaginary part of (3 - 8i)^2 ) =
:
square root( 3^2 + (-8)^2 ) = square root( 9 + 64 ) = square root( 73 )
: