Consider the binary tree below. Observe that it has a weight for each edge. Let the weighted path length of a path in the tree be the sum of its edge weights. Assume that each path in the tree is equally likely to be chosen. Derive the expected weighted path length to a leaf from the root. Justify your answer

You have written, as part of a school assignment, a research paper on the solar system. you want to share this paper on your school website. on which type of server will you upload it?

Melissa needs to add a topic to an email that she will send to her teacher. choose the name of the field where she should type her topic.

1)consider the following code snippet: #ifndef book_h#define book_hconst double max_cost = 1000.0; class book{public: book(); book(double new_cost); void set_cost(double new_cost); double get_cost() const; private: double cost; }; double calculate_terms(book bk); #endifwhich of the following is correct? a)the header file is correct as given.b)the definition of max_cost should be removed since header files should not contain constants.c)the definition of book should be removed since header files should not contain class definitions.d)the body of the calculate_terms function should be added to the header file.