The answer is m=-7
Step-by-step explanation:
7m=2m-35
2m-2m=0
7m-2m=5m
5m=-35
5m/5=m
-35/5=-7
m=-7
4sqrt5
step-by-step explanation:
the base has dimensions of 8 x 4, so the diagonal is 64 + 16 square rooted or 4sqrt5.