Answer:
Option D is right,.
Step-by-step explanation:
-a+4b+2c=-8 ... i
3a+b-4c=9 ... ii
b=-1 ... iii
Substitute the value of b, in i and ii
-a-4+2c =-8 or -a+2c = -4
and 3a-1-4c = 9 or 3a -4c =8
Now we have two equations in two variables
-a+2c =-4 and 3a-4c =8
a = 2c+4: substitute this in the other equatin.
3(2c+4)-4c =8 Or 2c +12 =8
2c =-4 or c = -2
Substitute in -a+2c =12
-a-2 = -4
a = -2+4 =2
a=2, b=-1 and c =-1 is the solution.
Answer:-4
Step-by-step explanation:
Subtract 5 from each side, which leaves you with 3x=-12. Then divide each side by 3. Then that leaves you with x=-4
Answer:
um hi?
Step-by-step explanation:
This is a Linear sorry if I’m wrong
Circumference = 2πr
Our cylinder's circumference: 2 * π * 9 = 18π
Surface area of cross section = πr² = π * 9² = 81π
* 2 since there is two cross sections: 81π * 2 = 162π
Surface area of rounded face, treat it like a rectangle: C*H
18π * 11 = 198π
Add the surface areas, 198π + 162π = 360π in²
