Answer:
72 hope it helps............
Answer:30 feet.
Step-by-step explanation: 2 doubled is four and in the bigger triangle it says 5. Therefore 12 doubled and a bit more is 30
Answer: 12.81
Step-by-step explanation:
$480 = x(20) + y(8)
where x+y=30
20 Hard covers = $400
10 Paper Backs = $80
80 + 400 = 480