Note that 2x-y=8 can be solved for y: y=2x-8. This is identical to the first equation. The graph of one is exactly the same as the graph of the other. Thus, the two equations are dependent.
Answer:
x = 2-7y over 4
Step-by-step explanation:
4x+7y=2
-7y -7y
4x = 2 - 7y
/4 /4
x=2 - 7y/4
Answer:
a=6.9
Step-by-step explanation:
a(2)+4(2)=8(2)
4×4=16 8×8=64
16-16 64-16
a(2)=6.9
Caculator:
Press 2nd, press x2(close to bottom left)
6.92 PLEASE ROUND
6.92=6.9
a=6.9
Answer:Let =tan2
t
=
tan
x
2
, then cos=1−21+2
cos
x
=
1
−
t
2
1
+
t
2
and tan=21−2
tan
x
=
2
t
1
−
t
2
.
Now
1+21−2+21−2(1+)21−21+1−tan2
Step-by-step explanation:
