What is the expression of d dozen eggs?

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

Can (2,3 and square root 10) be sides ona right triangle?

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?