Answer:415320
Step-by-step explanation:
Answer:

Step-by-step explanation:
The given quadratic form is of the form
.
Where
.Every quadratic form of this kind can be written as

Observe that
is a symmetric matrix. So
is orthogonally diagonalizable, that is to say,
where
is an orthogonal matrix and
is a diagonal matrix.
In our case we have:

The eigenvalues of
are
.
Every symmetric matriz is orthogonally diagonalizable. Applying the process of diagonalization by an orthogonal matrix we have that:


Now, we have to do the change of variables
to obtain

Which can be written as:

Answer: 16,000 students
Step-by-step explanation:
8/20 = x/40,000
20 * x = 8 * 40,000
x = (8 * 40,000)/20
x = 16,000 students
Answer:
the correct answer is option ( D )
Step-by-step explanation:
hope it helps
ALONE96