If I am understanding the question, and assuming the living room is a rectangle, then the border should be 80 ft
The sum of length and width is half the perimeter, 160 yd. The length is the average of the sum and difference of dimensions:
.. (160 +20)/2 = 90
Then the width is 160 -90 = 70
The rectangular field is 70 yd by 90 yd.
The person sitting next to me was very sensitive.
Answer:
B:subtraction property
Step-by-step explanation:
