If the pattern below follows the rule starting with five every consecutive line has a number that is four less than twice the previous line how many marbles must be in the sixth line

Question

Jayce Barton

Mathematics

Today, 11:23

If the pattern below follows the rule starting with five every consecutive line has a number that is four less than twice the previous line how many marbles must be in the sixth line

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Answers (2)

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Helen Orr · Answer 1

The answer is 36

Kadyn Willis · Answer 2

The rule starting with five. 5 marbles in first line.

Every consecutive line has a number that is four less than twice the previous line.

marbles in second line = 2 (marbles in first line) - 4

So the number of marbles in second line = 2 (5) - 4 = 10-4 = 6

marbles in third line = 2 (marbles in second line) - 4

So the number of marbles in second line = 2 (6) - 4 = 12-4 = 8

marbles in fourth line = 2 (marbles in third line) - 4

So the number of marbles in fourth line = 2 (8) - 4 = 16-4 = 12

marbles in fifth line = 2 (marbles in fourth line) - 4

So the number of marbles in fifth line = 2 (12) - 4 = 24-4 = 20

marbles in sixth line = 2 (marbles in fifth line) - 4

So the number of marbles in sixth line = 2 (20) - 4 = 40-4 = 36

36 marbles must be in the sixth line.