So area is base x height:
5(x+2)=20
5x+10=20
5x=10
x=2
its A
Answer:

Step-by-step explanation:

Step 1: Divide the numbers

Step 2: Simplify

Step 3: Simplify

Therefore, the simplified answer is 
FIrst we know that
1 second = 1/3600 hours
5280 ft = 1 miles
Which means that
50 Ft = 50/5280 miles
So the conversion
(5/5280 miles ) / (1/3600)
= 5/5280 miles x 3600
= 34.09 miles per hour
Angle ABC would equal 36 degrees because angleDBC is congreunt to angle ABD.