Let the second number be x, then the first number is x - 47
x + x - 47 = 218
2x = 218 + 47 = 265
x = 265/2 = 132.5
Therefore, the first number is 132.5 - 47 = 85.5 and the second number is 137.5
Trust me this is the answer 18.666666
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).