Find the reduced echelon form of [1, 2, 4; 0, 3, 6; 0, 2, 4]

Step-by-step explanation:

Given:

We need to reduce the given matrix to reduced echelon form.

Solution:

Make zeroes in column 1 except the entry at row 1, column 1. As we can see all elements in column are already zero. Make zeroes in column 2 except the entry at row 2, column 2.

So, in reduce echelon form is

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation: