Answer:
x=-2
Step-by-step explanation:
The probability is 6/9 or 66.6%
K²+11k+30
(k+5)(k+6)
k=-5,-6
Answer:
I dont know if I can answer if I don't have more information then the question
We need to build a system of equations:
a + b + c = 127......(1)
b - c = 13..............(2)
a - b - c = 41..........(3)
adding equations (1) and (3):-
2a = 168
a = 84
Substituting for in equation (1)-
84 + b + c = 127
b + c = 43...........(4)
Adding equations (2) and (4):-
2b = 56
b = 28
Finally from equation (2)
c = 28-13 = 15
Answer is Country a had 84 points , b had 28 points and c had 15 points.