Swapping rows alters the sign of the determinant:

Multiplying a single row by a scalar scales the determinant by the same amount:

Then

Answer:
144 in²
Step-by-step explanation:
Find the area of the larger square, then subtract the area of the square we cut out.
The larger square has side length of 15, so it has an area of 15² = 225 in²
The smaller square has side length of 9, so it has an area of 9² = 81 in²
The area left over is
225 - 81 = 144 in²
Answer: w - 7
Step-by-step explanation:
The expression is simply less 7 less than w, or w - 7.
Answer:
-44
Step-by-step explanation:
Answer:
It is quantitative because they are looking at the weights which are numbers.