The average (arithmetic mean) of x and y is 20. if z=5,what is the average of x,y and z?

Question

Математика: The average (arithmetic mean) of x and y is 20. if z=5,what is the average of x,y and z? ​

Andrianovnd · Answer

15Пошаговое объяснение:сумма х + y = 20*2 = 40сумма x + y + z = 40 + 5 = 45среднее арифметическое (x+y+z)/3 = 45 : 3 = 15...

The average (arithmetic mean) of x and y is 20. if z=5,what is the average of x,y and z? ​