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zhannawk [14.2K]
3 years ago
14

At 2 pm the level of the water in the pool was 10 ft . at 6 pm the level of water was 2 feet. find the rate of change of the wat

er
Mathematics
1 answer:
daser333 [38]3 years ago
8 0
It dropped 2 feet per hour
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Sam paid $8.28 for 18 stamps.at this rate,how much would it cost Sam to buy 12 stamps
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Answer: It costs $5.52 to Sam to buy 12 stamps.


Step-by-step explanation:

Given: Sam paid $8.28 for 18 stamps.

Thus, the cost of 18 stamps = $8.28

Then the cost of 1 stamp=\frac{8.28}{18}

Thus, the cost of 1 stamp=$0.46

With the same rate , the cost of 12 stamps=0.46\times12

Therefore, the cost of 12 stamps= $5.52

hence, it costs $5.52 to Sam to buy 12 stamps.

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