I'm afraid it's not 11 (unless you can round the result up, but there is no mention about it).
8 + 13 + 11 + 9 + 13 = 54
54 / 5 = 10,8
Firstly you sum all the numbers and then you divide the result by the amount of the summed up numbers.
Answer:
31 mm
Step-by-step explanation:
5mm + 2mm + 8mm + 16mm
Answer:
what? please give more details
Step-by-step explanation:
20/36 reduced is 5/9. hope this helped! :)