It is 88 because you times both top and bottom with the same number the denominator should equal to a 100. <span />
If you want to express percentage as a decimal, you have to divide the number by 100:
79.2/100
The correct answer to this is:
0.792
On the augmented matrix, each row represents an equation of the linear system. From left to right, the first three elements of the row represent the coefficients of the variables in order, the last element represent the right side of the equation.
On the third row we have the elements 3 8 0 4, which gives to us the following equation
23× 32× 5 that’s the prim factorization
The answer is the 2nd circle