Answer
X-2y = 2
3x + y = 6
Ox=-2
Ox=0
Ox=2
Ox=3
= 0
Step-by-step explanation:
easy
Answer:
C
P(n,r)=P(13,9)
=13!(13−9)!
=2.594592E+8
= 259459200
( − ∞ , ∞ )