3x+9 10x-2 If the perimeter of the park is 20x-13, what is the missing length?
To find the missing length, we need to determine the total length of the park by adding together the two known lengths: 3x+9 and 10x-2.
Total length = 3x+9 + 10x-2
Total length = 13x + 7
Now, we know that the perimeter of the park is 20x-13. To find the missing length, we can subtract the total length from the perimeter:
Missing length = 20x-13 - (13x + 7)
Missing length = 20x-13 - 13x - 7
Missing length = 7x - 20
Therefore, the missing length of the park is 7x - 20.