Abraham's physics class has 40 students, and his class had an average (arithmetic mean) score of 75 on the midterm. anita’s physics class has 20 students, and her class had an average score of 81 on the same midterm. what was the average score of all the students in both physics classes on the midterm?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Determine the common ratio and find the next three terms of the geometric sequence. 649-14-02-00-00_files/i0100000, 649-14-02-00-00_files/i0100001, 2, a. 3; 649-14-02-00-00_files/i0100002, 649-14-02-00-00_files/i0100003, 649-14-02-00-00_files/i0100004. c. 649-14-02-00-00_files/i0100005; 649-14-02-00-00_files/i0100006, 649-14-02-00-00_files/i0100007, 649-14-02-00-00_files/i0100008. b. 3; 6, 18, 54 d. 649-14-02-00-00_files/i0100009. 6, 18, 54 select the best answer from the choices provided a b c d

This summer the number of tourists in salem increased 4.5% from last years total of 426000. how many more tourists came to salem this summer