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A child is building a triangular tower. The first (bottom) row of the 12-row tower is made with 12 blocks. Each successive row uses one less block. Which equation represents the…

A child is building a triangular tower. The first (bottom) row of the 12-row tower is made with 12 blocks. Each successive row uses one less block. Which equation represents the…
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A child is building a triangular tower. The first (bottom) row of the 12-row tower is made with 12 blocks. Each successive row uses one less block. Which equation represents the total number of blocks used in the tower?

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User Dave Slutzkin
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1 Answer

3 votes

Answer:

correct answer is A, i just took the test.

s12= 12/E/k=1 <12+ (k-1)(-1)>

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User Yrazlik
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