A group of 100 people touring Europe including 36 people who speak French, 55 who speak Italian and 22 who speak neither language. How many people in the group speak both French and Italian

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

Graph y ≥ -x^2 - 1. click on the graph until the correct graph appears.

If chord ab is congruent to chord cd, then what must be true about ef and eg?