Asked by H
a pile of bricks has 97 bricks in the first row, 91 bricks in the second row, 85 bricks in the third row, and so on until there is only one brick in the top row how many bricks are in the 15th row
Answers
Answered by
Damon
well I guess we have an arithmetic sequence where a = 97 and d = -6
https://www.mathsisfun.com/algebra/sequences-sums-arithmetic.html
d + d(n-1)
97 - 6(14)
https://www.mathsisfun.com/algebra/sequences-sums-arithmetic.html
d + d(n-1)
97 - 6(14)
Answered by
oobleck
This is just an AP, with
A1 = 97
d = -6
and you want to find A15 = A1 + 14d
so plug in your numbers
A1 = 97
d = -6
and you want to find A15 = A1 + 14d
so plug in your numbers
Answered by
Anonymous
97x 15=14x-6
Answered by
Paul
Asan yung sagot
Answered by
Jolette
a pile of bricks has 97 bricks in the first row, 91 bricks in the second row, 85 bricks in the third row, and so on until there is only one brick in the top row how many bricks are in the 10th row
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