Question

Select the expression that is equivalent to |4-3i| a. 1 b. 7 squared c.5i d.5

Answer 1

Answer: d.5

Step-by-step explanation:

For any complex number z= a+ib , where a and b are arbitrary real numbers.

The modulus of z is $|z|=\sqrt{a^2+b^2}$

Let  $z=4-3i$ , here a=4 and b= -3

Then,  $|z|=|4-3i|=\sqrt{4^2+(-3)^2}$

$=\sqrt{16+9}=\sqrt{25}=5$

Hence, the xpression that is equivalent to |4-3i|  is 5.

Hence, the correct answer is option d 5.

Answer 2

Answer:

For anyone who needs the answer now, it is D.) 5