Solve this problem please.

Hi there!

The correct answer is: 21 m

Step-by-step explanation:

Using the law of cosine: ( c² = a²+ b² − 2ab cos(C) )

In this case the missing side BC, would be represented by "C"

c² = (6.5)² + (21.9)² - (2)(6.5)(21.9)cos(73.5)

simplify and you get c=21 m

first one is a: renaming a fraction. second one is c: de-c

step-by-step explanation:

my explanation is that these were the answers on edg : )

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'.