Answer:
can u show me a pic of the question so it is easier
Because taking the inverse of a matrix A involves multiplying a matrix by the scalar value 1/det(A), and that value is undefined when det(A)=0
$580 laptop/ $40 earned a week = about 14.5 weeks to buy the laptop
Width = W
Length = 3 times w = 3W
Area = length x width = 3W * W = 3W^2
Cubes have 6 equal faces, and the surface area is the sum of all of these faces. Thus, one face would be 1/6 of the cube's surface area, or about 17%.
