Answer:
Remember, a homogeneous system always is consistent. Then we can reason with the rank of the matrix.
If the system Ax=0 has only the trivial solution that's mean that the echelon form of A hasn't free variables, therefore each column of the matrix has a pivot.
Since each column has a pivot then we can form the reduced echelon form of the A, and leave each pivot as 1 and the others components of the column will be zero. This means that the reduced echelon form of A is the identity matrix and so on A is row equivalent to identity matrix.
Answer:
The answer to 75 - ( 8 + 45 ÷ 3 ) × 2= 29
Answer:
8
Step-by-step explanation:
8-2=6
6x5=30
Answer:
1860
Step-by-step explanation:
1875-15 = 1860
You haven't provided any value, but I can tell you the solution set for the inequality.
First of all, expand both sides:
Add 3x to both sides:
Add 6 to both sides:
Which is of course equivalent to
Divide both sides by 9
So, every number smaller than 2 is part of the solution of this inequality.
