A1=12, a2=27, a3=42, etc. The pattern is that you’re always adding 15 after starting with 12. So the general rule is...
an=12+15(n-1)
So then...
a18=12+15(18-1)
a18=12+15(17)
a18=267
The answer is 2.375 or 2 3/8
Assuming you are asking
does -2x+y=6 and y-2x=4 have a solution
look at them
rewrite first equation by switching x and y
y-2x=6 and
y-2x=4
false since they are same values
there is no solution
these 2 lines are paralell
NO SOLUTION
Answer:
x=
−5/
2
+
1
/2
√21 or x=
−5
/2
+
−1/
2
√21
Step-by-step explanation: