The unit rate is:
chapters per hour
Step-by-step explanation:
Given
chapters read = 
Time = 
Unit rate is calculated by dividing the total chapters by total time
So,

Hence,
The unit rate is:
chapters per hour
Keywords: Unit rate, fractions
Learn more about fractions at:
#LearnwithBrainly
Answer:
10 cm³
Step-by-step explanation:
According to Archimedes, if we place an object in water, the rise of the water in mL will be the volume of the object in cm³.
Without the rock, the water measures 20 mL.
With the rock, the water measures 30 mL.
The change here is
, so 10 cm³ is the volume of the rock.
Hope this helped!
Answer: 611045000
Step-by-step explanation:
Step-by-step explanation:
f(x) = x² - 4
g(x) = 7 - x
= (fog)(2)
= x² - 4
= (7 - x)² - 4
= (7 - 2)² - 4
= 5² - 4
= 25 - 4
= 21
(fog)(2) = 21