B
The value of x does not change in reflection across the x axis while the sign of the value of y is reversed because it travels a distance equal to its distance from the x-axis in the negative y-axis.
Answer: -5-13i
Work Shown:
(1-4i) - (6+9i) = 1-4i-6-9i
(1-4i) - (6+9i) = (1-6) + (-4i-9i)
(1-4i) - (6+9i ) = -5 - 13i
Answer:

Step-by-step explanation:

Hope this helps
Answer:
add the y coordinates of the two lines and divide by 2
Step-by-step explanation:
½[0+(-12)]
½[0-12]
½[-12)
y co-ordinate of the midpoint is -6
Answer:
Let x be how far from the tower can it be placed
by Pythagorus theorem
x^2 + 96^2 = 105^2
x=√(105^2 -96^2 )=√1809 = 42.532340 = 42.5 ft