There are 100 children in a school. 20 of them have kittens, 45 have puppies, 30 have ponies and 18 of them have unicorns. None of the students have more than two pets. The only students who have two pets have a puppy and a kitten. How many of the students have two pets?

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'.

what do u need to know

step-by-step explanation:

if i put something wrong your not gonna like it so rather not say nothing.

2 x 503

step-by-step explanation:

its 1006