X = 96
100 137.4
137.4x=(100)(96)
137.4x=9600
137.4x/137.4=9600/137.4
x=70%
300 parking spaces
Multiply the rows by the spaces in each row. 20 x 15 = 300
Answer: 
Step-by-step explanation:
Using the same-side interior angles theorem,
.
Using the alternate interior angles theorem, 
Two angles are complementary when they add up to 90 degrees<span>
</span><span>smaller angle = x
</span><span>larger angle = 9x
</span>
x + 9x = 90
10x = 90
x = 90/10
x = 9° ← smaller angle
larger angle = 9x = 9 * 9 = 81°