Answer:
the length is 21
Step-by-step explanation:
50-4-4=42÷2=21
Check the picture below.

since the width is just a dimension unit, it can't be -31.
what is the length? well, the length is w + 30.
Considering High School level question, answer can be written as:
A system of 2 linear equations is [two] dimensional. It is a graph of [two] lines. The solutions can be [unique] solution if the graph intersects. [No] solution if the lines are parallel - meaning they have the same slope, or [Infinitely many] solutions if they are the same line.
Explanation:
when two lines are drawn on a two-dimensional plane then there are only three possible cases:
Case1: lines will intersect
In that case you will get a unique solution at the intersection point.
Case2: lines are parallel but don't touch each other
In that case there will be no point which lies on both lines so No solution.
Case3: lines are overlapping.
In that case all the points lies on both lines so infinitely many solutions.
Answer:
7
Step-by-step explanation:
Answer:
none
Step-by-step explanation:
-14[x±2]=-14x±28
14[-x±12]=-14x168
14[-x±2]=-14x±28
-14[-x±12]=-14x±168