Answer:
16
Step-by-step explanation:
13-m=2(-4+m)
13-m=-8+m
-m-m = -8-13
-2m = -21
M= -21 : -2
= 10.5
Sorry if I'm wrong ..
The area with out the frame 20x24=480
the area with the frame 28x24=672
672-280=392 cm²
C because the points make a trapizoid that has two congruent sides
