If a linear system has four equations and seven variables, then it must have infinitely many solutions. True or False
1 answer:
Answer:
The statement is False.
Step-by-step explanation:
Consider the provided information.
If a linear system has four equations and seven variables, then it must have infinitely many solutions.
We need to determine the above statement is true or false.
The above statement is false, it could be inconsistent, and therefore have no solutions,
For example:
Hence, there is no solution.
You might be interested in
Option B: and
, so
is supplementary to both
and
, so EFGH is a parallelogram.
Option C: so EFGH is a parallelogram.
Option D: so EFGH is a parallelogram.
Explanation:
Option A: and
so
is supplementary to both
and
, so EFGH is a parallelogram
Let us substitute and
in
,
and
to determine the exact measures the angles of the parallelogram.
Substituting, we get, ,
Thus, because the measures of these angles are not equal.
Hence, Option A is not the correct answer.
Option B: and
, so
is supplementary to both
and
, so EFGH is a parallelogram.
Let us substitute and
in
,
and
to determine the exact measures the angles of the parallelogram.
Thus, substituting, we have, ,
Hence, Option B is the correct answer.
Option C: so EFGH is a parallelogram.
To determine the angles, let us substitute in
and
Thus,
Since, the opposite angles of a parallelogram are equal, EFGH is a parallelogram.
Hence, Option C is the correct answer.
Option D: so EFGH is a parallelogram.
Let us substitute and
in
,
and
to determine the exact measures the angles of the parallelogram.
Substituting, we have, ,
Adding the angles E and G, we have,
By the property of parallelogram, any two adjacent angles add upto 180.
Thus, the adjacent angles E and G add upto 180.
Hence, Option D is the correct answer.