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.
Find that median 169, 72, 161, 322, 56, 145, 64,64, 80, 288, 95, 97, 209,209,48
Alexus [3.1K]
Answer:
97
Step-by-step explanation:
The number in the middle is 97
Let the number = x
Given: The sum of -5 and a number is -15
Then,
x - 5 = -15
or x = -15 +5 = -10.
Hence, the number is -10
Answer: commutative property
Step-by-step explanation:
basically the commutative property of multiplication says that it doesn't matter what order you multiply the numbers, it will all equal the same.
the rule is "ab = ba"; in numbers, this means 6×3 = 3×6
Answer; #3, 240 would be your correct answer
