A student ran out of time on a multiple-choice exam and randomly guessed the answers for two problems. Each problem had answer choices –,, – and only one correct answer. What is the probability that she answered neither of the problems correctly? Write your answer as a fraction in the simplest form.

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'.

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it