Que es un ángulo obtuso
2 answers:
You might be interested in
Answer:
$6326.6
Step-by-step explanation:
5000(1.04) Multiply 5000 by 1.04 to the 6th exponent.
Answer:
b)
Step-by-step explanation:
A is invertible if and only if det(A)≠0. Let's compute the determinant of A and find the values k for which it is nonzero.
Using Sarrus's rule, we obtain that
Note that the determinant is a quadratic equation on k, which can be factored as above.
Now the determinant is only zero if k=5 or k=2 (the zeroes of the quadratic polynomial). Therefore, if k≠2,5 the determinant is nonzero so A is invertible.