Answer:

Step-by-step explanation:
<u>Perpendicular Bisector</u>
The bisector of a segment defined by points (x1,y1) and (x2,y2) must pass by the midpoint of the segment.
The midpoint (xm,ym) is calculated as follows:


The endpoints of the segment are (-3,-8) and (5,-4), thus the midpoint M is:


Midpoint: M(1,-6)
Let's find the slope of the given segment. The slope can be calculated with the formula:


If the bisector is also perpendicular, its slope m2 and the slope of the segment m1 must comply:

Solving for m2:

Once we have the slope -2 and the point through which our line must pass (1,-6), we compute the equation in its point-slope form:


Operating


Rearranging

Answer:
4. 12 in.
5. 3 in.
6. 3in per hour
7. slope would=3
Step-by-step explanation:
The measurement of angle b is 128°
Answer:
28
Step-by-step explanation:
4+6=10,10+6=16,16+6=22,22+6=28
Step-by-step explanation:
"If the sum of 2 angles is 180°, then each is the supplementary angle of the other".