Answer:
18.01
Step-by-step explanation:
20.10 - 2.09 = 18.01
Ok so set up a proportion:

now cross multiply to get
50x = 900
divide 50 on both sides
x = 900/50 = 18 mi
Answer:
129
Step-by-step explanation:
the sum of the interior angles of a quadrilateral is 360, so you add 71+112+48 and subtract it from 360 to get x
57,575, 72,369, 72,752, 75,321
6,074,232, 6,234,921, 6,243,219