zoeselker zoeselker
  • 05-07-2021
  • Mathematics
contestada

How many marbles do you need to be able to arrange them into the shape of an equilateral triangle with 75 rows

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nogohobobobo
nogohobobobo nogohobobobo
  • 06-07-2021

Answer:

2850

Step-by-step explanation:

1+2+3+4+5+6+7...74+75

just add up all the numbers from 1 to 75

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