Answer:
It is B. 15 because the formula for this is 2 (l+w) 15+6=21 21*2=42
m = 300
Step-by-step explanation:
multiply both sides of the equation by 5
A(-4, 1)
The parts being equal means ...
A - P = P - B
A = 2P - B . . . . . . . . useful to remember for P being the midpoint of AB
A = 2(-1, 4) -(2, 7) = (-2-2, 8-7)
A = (-4, 1)
