Becuase 80 is the same as 8 but has an extra 0 at the end (which makes it 80) and same for 20 to 2. 8 + 2 = 10 (now add a zero at the end). The answer should be 100.
Answer:
or 
Step-by-step explanation:
Given

Required
Solve and graph

Remove absolute bracket
or 
Solve for p
or 
or 
Divide by -1
or 
<em>See attachment for plot</em>
(-7)*(2/5 + (-3/7))
= -14/5 + 3
=1/5
The odds of getting a red first is 5/12. the odds of getting a green second is 7/11. the probability of both is then 5/12 * 7/11, or 35/132