Difference between 8.2 and 4.99

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

What is the value of the expression i 0 × i 1 × i 2 × i 3 × i 4? 1 –1 i –i

Louis wants to carpet the rectangular floor of his basement the basement has an area of 864 square feet the width of the basement is 2/3 its length what is the length of lewis's basement