Mathematics, 24.01.2022 22:51, alienxangg91
a boy is building a pyramid out of building blocks. he put 20 blocks in the first row, then he puts 19 blocks in the row above, and so on. find the total number of blocks he needs. find the total number of blocks he need
Answers: 1
Mathematics, 21.06.2019 18:30, jorozco3209
Haruka hiked several kilometers in the morning. she hiked only 66 kilometers in the afternoon, which was 25% less than she had hiked in the morning. how many kilometers did haruka hike in all?
Answers: 1
a boy is building a pyramid out of building blocks. he put 20 blocks in the first row, then he puts...
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