Can someone explain how to solve this? (not just the answer) : emily built a rectangular pen for her dogs. she used an outside wall of the garage for one of the sides of the pen. she had to buy 20 m of fencing in order to build the other sides of the pen. find the dimensions of the pen if its area is 48 meters squared.

The answer is 6 by 8 OR 4 by 12 metres. The way I worked this out was to work out the factors of 48. I wrote down all of them. I then labelled each side of the rectangular pen 1 through 4 (garage side being 4). I figured 1+2+3 must equal 20 whilst 4 X 1 or 3 X 2 must equal 48m². Knowing that, for it to be a rectangle 1 and 3 must be the sane as well as 4 and 2, I went through the factors trying to fit the numbers with this theory. Eventually, I found 8 and 6 work well (1 and 3 being 6 whilst 2 is 8) and then I found 4 and 12 are the same (1 and 3 are 4 and 2 is 12). Hope this helps with the picture I sent

your answer is d 2,500

step-by-step explanation:

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column