Answer:
Step-by-step explanation:
Given : Expression = 
Simplifying the expression :
Step 1. Write the expression = 
Step 2. Add the similar elements: 
= 
Step 3. Add the similar elements: 
= 
Therefore,
is the simplified form of 
Well, basically there are
acute angle, right angle, obtuse angle ..
and also we use concurrent angles, corresponding angles, alternate angles, vertically opposite angles,..
..hope it helped a bit
Answer:
3002
Step-by-step explanation:
Very simple, just add them up.
prob( it lands on open end) = 8/20 = 2/5
prob ( lands on closed end) = 4/20 = 1/5
The second choice is correct.