Answer:
A
Step-by-step explanation:
Angle 3 and angle 6 are congruent because they are alternate interior angles. Angle 3 plus angle 1 is 180 degrees. So you just subtract 123 from 180 (180-123) and you get 57 degrees.
Answer:
56
Step-by-step explanation:
8 times 7=56
Answer:
$3160.84
Step-by-step explanation:
2254 + 873.84 + 25 + 358 = 3510.84
3510.84 - 350 = 3160.84
Complex numbers emerge when you take the square root of a negative number, since the imaginary unit 
is defined by the relation 
, which implies 
The only option involving the square root of a negative number is the last one.
