The graph below shows the heights and arm spans of students in a classroom. height and arm span of students based on the graph, which is the best prediction of the height of a student with an arm span of 143 cm?

143 cm

Step-by-step explanation:

Using the graph attached, it follows that the arm span is directly proportional to the height of students. Evidently, when the height is 160 the arm span is also 160, other values follow the same order such as 180. Marking at the point when arm span is 143 from the graph, the point coincides with height of 143 cm. Therefore, the height is 143 cm

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1

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'.