Answer: 
Step-by-step explanation:
Given
The odds against winning in a chess tournament are 1 to 11.
Odds is defined as the ratio of the probability of occurrence to the non-occurrence of event.

Probability of non-occurrence i.e. she wins the first prize is

Answer: -2
Step-by-step explanation:
3x+2y=16
x+y=4 multiply by -2
-2x-2y=-8
3x+2y=16 ------a
-2x-2y=-8 -------b
Add equation a and b
(3x+-2x)+(2y+-2y) = 16+(-8)
x+0=8 (y has been eliminated)
Answer:
I believe its 108°
Step-by-step explanation:
as it's a pentagon I looked up the angle of the top of a pentagon and found 108°
Answer:

Step-by-step explanation:
ask if you need it for the answer