Mass is bigger than weight
Answer: A.) 8
Explanation:
Use u-substitution.
(1) Let u=x^3
By the power rule, du/dx=3x^2
Multiplying by dx and dividing by three, we have du/3=x^2dx
To find the new lower bound of integration, plug the old bound, -3, for x in equation (1). We get u=(-3)^3= -27
Similarly, when the upper bound 3 is plugged in, u=27
Now, replacing f(x^3) with f(u) and x^2dx with du/3:
since the value of the first integral of the question = 12, which is given. Although the variable is different than the given (u instead of x), it's still the same integral
Depending on the context it is used if may be either Survey or a Question but I think in this case it is a question
Hope it helps
Answer:
B
Explanation:
What you have is correct I believe, typically we see net productivity usually drops by a factor of ten from one trophic level to the next. But here we are trying to go back from secondary consumer ----> primary consumer ----> producer. So if we had started from 56,000 then we would have 560 by the time we reach secondary consumer.