Answer:
9+ 3x
Step-by-step explanation:
hope this helps :)
i can not give the answer unless you still cannot find it after these steps but I have steps that might help
1. Set the matrix (must be square).
2. Reduce this matrix to row echelon form using elementary row operations so that all the elements below diagonal are zero.
3. Multiply the main diagonal elements of the matrix - determinant is calculated.
Answer:
13
Step-by-step explanation:
The equation for the area of a rectangle is: A = bh, where A = area, b = length of base, and h = height.
You're told that the base, b = 5 in, and the height, h = 2.5 in. Plug these numbers into the equation to find the area:
A = bh
A = (5)(2.5)
A = 12.5

If you include the hundredth place, your answer would be 12.50

.
-------
Answer: 12.50