What is the area? of the triangle in millimeters

Explain why the function is discontinuous at the given number a. (select all that apply.) f(x) = 1 x + 1 a = −1 f(−1) is undefined. lim x→−1+ f(x) and lim x→−1− f(x) exist, but are not equal. lim x→−1 f(x) does not exist. f(−1) and lim x→−1 f(x) exist, but are not equal. none of the above

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Solve for n? [tex]z = \frac{3}{4} mn[/tex]