Answer: 9
Step-by-step explanation:
The answer is: [A]: " 20a − 5b − 9 " .
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Explanation:
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(12a <span>+ 7b) + (−6a − 9) + (14a − 12b) =
12a </span><span>+ 7b + 1(−6a − 9) + 1(14a − 12b) =
</span>
12a + 7b + (1*-6a) + (1*-9) + (1*14a) + (1* -12b) =
12a + 7b − 6a − 9 + 14a − 12b = ?
Combine the "like terms:
12a − 6a + 14a = 20a ;
7b − 12b = - 5b ;
and then we have "-9" ;
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So, write as: " 20a − 5b − 9 " ; which is: Answer choice: [A].
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The table of the number of dolphins is used to illustrate probability
The probability that a dolphin group is partaking in travel is 0.2063
<h3>How to determine the probability</h3>
From the table, we have:
- The total number of dolphin group = 189
- The total number of dolphin group that partake in travel = 39
So, the probability that a dolphin group is partaking in travel is calculated as:
p = 39/189
Divide
p = 0.2063
Hence, the probability that a dolphin group is partaking in travel is 0.2063
Read more about probability at:
brainly.com/question/25870256
Answer:
N = 14348907
Step-by-step explanation:
81^5 = 3486784401
3486784401/243 = 14348907
Double Check
3486784401 / 14348907=243
So N = 14348907.
