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mote1985 [20]
3 years ago
10

There are a total of 128 teams at the start of the citywide 3 on 3 basketball tournament. half the teams are eliminated after ea

ch round. write and solve an exponential equation to determine after which round there are 16 left
Mathematics
1 answer:
Paha777 [63]3 years ago
4 0
Let T be the number of teams after n rounds.
T=128\times(\frac{1}{2})^{n}

When T = 16, we get:16=128\times(\frac{1}{2})^{n}
Dividing both sides by 128, we get:
\frac{1}{8}=(\frac{1}{2})^{n}
Therefore n = 3
The answer is 'after the third round'.

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