The test scores for a group of students are shown.
87, 72, 98, 84, 72, 65, 72, 70, 58, 91, 81, 84
what is the mode of the scores?
a.
84
b.
78.8
c.
98
d.
85.5

Mode is the number that occurs most often. Out of those numbers, 72 would be the mode. But since that's not an option, I would say 84. 

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You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's