A syllabus for a course states that you can earn 450 points on homework,100 points on attendance, and 800 points on exams. What percentt of the final grade is determined by attendance? (nearest percent)

7

Step-by-step explanation:

Homework         450

Attendance        100

Exams                800

Total                 1350

% = 100 * 100/1350

% = 100 * 0.07407

% = 7.407%

% = 7%

4

step-by-step explanation:

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.