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Mazyrski [523]
2 years ago
12

80% of salmon pass through a single dam unharmed. By what percent does the number of salmon decrease when passing through a sing

le dam?
Mathematics
2 answers:
aalyn [17]2 years ago
3 0

Answer:20%

Step-by-step explanation:

icang [17]2 years ago
3 0

Answer: 20%

Step-by-step explanation:

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Which of the expressions is rational? 25 + 2 7 − 2 64 + 45
Levart [38]

Answer:

All of the expressions

Step-by-step explanation:

A rational number is one that can be written as a ratio, or a number with a terminating decimal.

All of the expressions are whole numbers, so they are all rational.

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2 years ago
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A is set of positive multiples of 5 less than 23
Juli2301 [7.4K]

9514 1404 393

Answer:

  {5, 10, 15, 20}

Step-by-step explanation:

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That is, the multiples of 5 we want are for values of n that are 1 through 4. The set is ...

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