How did you get this answer and how did you do it how you do 19and20

20. The weight of the heaviest fish should be 14.6 lbs. To find this answer, you would multiply the average weight by 5 (because to get the average you add up all of the totals and divide by 5 because there were only 5 weights being averaged). You will get 61.5, then you add up the given four weights which totals out to be 46.9. You subtract 46.9 from 61.5 to find the missing weight in the sequence.

hope helps you mark as brainlist

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6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.