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The pyramid depicted on the back of the U.S. one-dollar bill consists of 13 rows of bricks. Each row contains a different number of bricks, with the bottom row having 7 bricks, and the rows above decreasing by one brick as you move up. In total, there are 28 bricks in the pyramid.
yes. its kinda like this: 7 get it? 5 2 3 2 0 1 2 0 0 ok,i got this one for my homework,its something like this: 4 23 236 2574
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follower row
Consider a system of linear equations . Let be its coefficient matrix. elementary row operation.(i) R(i, j): Interchange of the ith and jth row.(ii) R(ci): Multiplying the ith row by a non-zero scalar c.(iii) R(i, cj): Adding c times the jth row to the ith row.It is clear that performing elementary row operations on the matrix (or on the equations themselves) does not affect the solutions. Two matrices and are said to be row equivalent if and only if one of them can be obtained from the other by performing a sequence of elementary row operations. A matrix is said to be in row echelon form the following conditions are satisfied:(i) The number of first consecutive zerosincreases down the rows.(ii) The first non-zero element in each row is 1.The process of performing a sequence of elementary row operations on a system of equations so that the coefficient matrix reduces to row echelon form is called Gauss elimination. When a system of linear equations is transformed using elementary row operations so the coefficient matrix is in row echelon form, the solution is easily obtained by back substitution.