Answer:
(C) 30πcm
Step-by-step explanation:
In order to find circumference you use the formula C (circumference)=2(pi)(r) in which r is the radius. In this case, two and 15 are thirty so to find the circumference all you have is the equation 30 times pi centimeters is equal to the Circumference.
Answer: Option A
Step-by-step explanation:
Note that for the initial year, 1990, the population was 5.3 billion.
The exchange rate is 0.09125 billion per year. In other words, each year there are 0.09125 billion more people.
In year 2 there will be 0.09125 * 2 billion people
In year 3 there will be 0.09125 * 3 billion people
In year 4 there will be 0.09125 * 4 billion people
In year t there will be 0.09125 * t billion of people
So the equation that models the number of people that there will be as a function of time is:
Where 
is the initial population
billion
r is the rate of increase
billion per year
finally the equation is:
The correct answer is option A.
Exact Answer: 83/15
Decimal Answer: 5.53 (bar notation above 3)
Mixed Number Answer: 5 8/15
Step-by-step explanation:
Convert the mixed numbers to improper fractions, then find the LCD and combine.
Answer:
A = 15π in²
Step-by-step explanation:
If two of the central angles are 80° and 130°, totalling 210°, then the third central angle must be (360° - 210°), or 150°.
Let's calculate the area of the entire pizza, whose diameter is 12 in and whose radius is therefore 6 in:
A = πr² → A = π(6 in)² = 36π in².
The area of the largest slice, the one with central angle 150°, is
(150/360) times the total area of the pizza:
A = (150/360)(36π) in², or 15π in²
