2(3x+4) you multiply 2 times 3x and 2 times 4 which gives you 6x+8
Answer:
(i)unique solution
Explanation:
We solve for x1 thus in the first equation:
x1-3x3=-3
x1-9=-3
x1=-3+9
x1= 6
We solve for a thus in the second equation:
2x1+ax2-x3=-2
2+a2-x3=-2
a2-x3=-4
a2=-4+x3
The sum of the angles shown is ...
720° = 3x + 240°
Then
480° = 3x
160° = x
Angle F = 160° -20° = 140°
Answer:
47.5
Step-by-step explanation:
50-5+4 =49
49/2 = 24.5
