It will be a cylinder. Since the are two side which is in the vertical side, the cylinder will result to have a rectangle when it is sliced because of the presence of this.<span />
In order to write the formula for another line which is parallel, we need the slope (m). Parallel lines never in fact touch or intersect at any one point. They are either the same lines, occupying the same points, or different parallel lines, never occupying the same points, but sharing the same slope (m).
If we put out equation in slope-intercept format: y = mx+b, we can obtain our needed m.
12x+3y=24 ->> 3y = -12x+24
3y/3 = (-12x+24)/3 ->> y = -4x+8, therefore our m = -4
Now we can use our info to make the line in point-slope format: y-y1 = m (x-x1)
So, y-7 = -4 (x--2) or y-7 = -4 (x+2)
You can leave it like that or convert it:
y-7 = -4x -8 ->> y = -4x -8+7 ->> y = -4x-1
or even in this format: 4x+y=-1
-5x-16=8
-5x=24



above is how to correctly solve the equation
The error is in step 3.
Step 3 as written: 
This is incorrect because you are removing the 5 from the -5x so it wouldn't be in the numerator.
Hope this helps
Answer: 41.51
Step-by-step explanation:

Answer:
75%
36= 100 16= 50% 8= 25%
Lets make percentage = P
(8x x 3x -x ) = ( P x 3x -x) 5 /1/20
= (8 *3) = P x 3 ) x 5 /1/20
reduce = P x 3 x 8 = 24 x 3 x 5 / 1/20
360/24 = 15 x 1/20
5 x 15 = 75%
Step-by-step explanation: