dillongivenstheman
21.10.2020 •
Mathematics
Dante is making a necklace with 18 rows of tiny beads in which the number of beads per row is given by the series 2 + 8 + 14 + 20 + ...
a. Use sigma notation to write the series. Explain what the numbers in the sigma notation represent in this situation and how you found the expression used in the summation.
b. Find the total number of beads in the necklace. Explain your method for finding the total number of beads.
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Ответ:
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Ответ:
Chance of getting number greater than 4 on one roll:
Either getting a 5 or 6
2/6 probability
2/6 = 1/3
If we roll the cube 12 times, the probability of getting a number greater than 4 is 1/3 of the time
12 * 1/3 = 4
She is expected to get a number greater than 4, 4 times