3 ft 9 in + 14 ft 5 in = 18 ft 2 in (18' 2")
18
-21.
The sum of 39 and -96 is -57.
The average is the sum divided by the number of original numbers. The sum of 132, 140, and 145 is 417. There were three original numbers, so the average is one-third of 417 or 139
145.
1 + 5 + 29 + 145 = 145
39 + 39 + 39 + 39 + 39 + 39 = 234
9 (81 + 64 = 145)
The sum of -18 and 39 is 21.
145 plus 68 is equal to 213.
The sum of 67 and 78 is 145.
39.