U start with 17,985...u add a number and the result is still 17,985. There is only 1 way this can happen and that is if the number u added was 0.
17,985 + 0 = 17,985....this is the additive identity property...which simply states that u can add 0 to a number and it still keeps its identity.
Answer:
No, this spigot doesn't fill at a faster rate.
Step-by-step explanation:
The first spigot can fill a pool with 9 gallons of water in a minute. Whereas the second spigot can only fill a pool with 8 gallons of water in a minute. Therefore, the second spigot fills at a faster rate.
75.66 would be your answer
The sum of all the measurements is just the average times the number.


So if the average of all 92 is 7 the sum of those is

The average of the last two is 7.2 so their sum is

That means the sum of the first 90 is

so the average of the first 90 is

cm