636 to the nearest one hundred

600

Step-by-step explanation:

It is less than 650

600

Step-by-step explanation:

Becuase when you round by 100's you have to see if the number is greater than 50 or not. In this case it is 636 and it is not greater, then 650.

this doesn't make sense lol

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.