Superstar7180

28.02.2020 • 

Mathematics

Over a 24-hour period, brown bears counted
840 salmon swimming upstream, and they
safely assumed that they only counted 30% of
the total number of fish going by. The salmon-
spawning haven along Copper River measures
approximately 90,000 cubic meters of water.
Given that the haven was empty before this
week, that the salmon swim upstream at a
constant rate, and that once they reach the
haven, the salmon hang out there indefinitely,
what will the population density of salmon in
the Copper River spawning haven be after one
week (to the nearest thousandth fish/m3)?
(A) 0.009 fish/m3
(B) 0.031 fish/m3
(C) 0.093 fish/m3
(D) 0.218 fish/m3

Ответ:

toxsicity

15.01.2021

Mathematics

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As you have already selected the answer is 19

Step-by-step explanation:

As for this question you can see that the triangles in the sequence each get incremented by 3 for each term. The first one has 1, the second one has 4, the third one has 7 and so on. So judging by this sequence if this continues to the 7th term you will end up with 16. The second has 4, the third has 7, the fourth has 10, the fifth has 13, and the sixth has 16 and finally you get 19 as your 7th term! I hope this answer helped your question! :)

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