1. pic 7
A. 7
B. 21
C. 26
D. 52
2. Pic 8
A. -1
B. 2
C. -2
D. 1/2
A median of a triangle is a segment drawn a vertex to the midpoint of the opposite side.
AD = BD
5x - 2 = 2x + 7
3x = 9
x=3
AD + BD = AB
5(3) - 2 + 2(3) + 7=26
Did you mean to say the slope of the altitude =4?
The product of the two slopes must be -1 since the lines are perpendicular.