4 + 3 * (7 - 2)
4 + 3 * 5
4 + 15
19 <==
-10,-8,-4,2,6,7 is from least to greatest
Answer:
hhhhhnn the answer is 3n+2.5.
The random variable given in the accompanying table is discrete
<h3>How to determine the type of variable?</h3>
From the question, we can see that the table describes the number of girls
The number of girls can only take whole numbers i,e, 0, 1, 2, 3....
Variables represented like this are discrete variables
Hence, the random variable given in the accompanying table is discrete
Read more about variables at:
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If (-1, -1) is an extremum of , then both partial derivatives vanish at this point.
Compute the gradients and evaluate them at the given point.
The first and third functions drop out.
The second function depends only on . Compute the second derivative and evaluate it at the critical point .
This indicates a minimum when . In fact, since this function is independent of , every point with this coordinate is a minimum. However,
for all , so (-1, 1) and all the other points are actually <em>global</em> minima.
For the fourth function, check the sign of the Hessian determinant at (-1, 1).
The second derivative with respect to is -2/(-1) = 2 > 0, so (-1, -1) is indeed a local minimum.
The correct choice is the fourth function.