Please help Can someone answer and tell me how to do this (Will mark brainliest)
1 answer:
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Answer:
The correct option is (A).
Step-by-step explanation:
If the reduced row echelon form of the coefficient matrix of a linear system of equations in four different variables has a pivot, i.e. 1, in each column, then the reduced row echelon form of the coefficient matrix is say A is an identity matrix, here I₄, since there are 4 variables.
Then the corresponding augmented matrix [ A|B] , where the matrix is the representation of the linear system is AX = B, must be:
Now the given linear system is consistent as the right most column of the augmented matrix is a linear combination of the columns of A as the reduced row echelon form of A has a pivot in each column.
Thus, the correct option is (A).
Sent a picture of the solution to the problem (s).
Answer:
Step-by-step explanation:
Since the sequence is increasing by a constant factor () each time, we know that this is an arithmetic sequence.
The formula for an arithmetic sequence is the following:
Where is the number in the sequence and
is the constant that the sequence is increasing by.
Based on all of the information given, we know that (since
is the first number in the sequence), and
, so we can construct the formula: