Answer:
x+9
Step-by-step explanation:
the perimeter of any polygon is the sum of all the sides

<h3><u>1. Find the permutation of the word LOVE taken 2 letters at a time.</u></h3>
<h2><u>ANSWER</u><u> </u><u>IS</u><u> </u><u>C.12</u></h2>
<h2>--------------------------------------------------------------------------------</h2>
<h3><u>2. If 3 girls enter a jeepney in which there are 7 vacant seats, how many ways are there for them to be seated?</u></h3>
<h2><u>ANSWER</u><u> </u><u>IS</u><u> </u><u>B.210</u></h2>
<h2>--------------------------------------------------------------------------------</h2>
<h3><u>3. How many combinations can be made from the letters of the word MOTHER taken 4 at a time.</u></h3>
<h2><u>ANSWER</u><u> </u><u>IS</u><u> </u><u>A.15</u></h2>
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<h3>→XxKim02xX</h3>
3 metres from one end to the third mark
Solution:
Total length of wood = 10 metre
Wood is marked into 10 equal length.


= 1 metre
Length of each marking = 1 metre
Number of metres from one end to third mark = 1 + 1 + 1 = 3 metre
The image of the marking is attached below.
Hence 3 metres from one end to the third mark.
First add what's in the parenthesis 1/2(3)(12)
then multiply 2 and 12 to get 1/2(36)
finally divide 36 by 2 and get 13