Alright, so if we wanted to take, for example, cell phone owners per 100 people and compare Germany to the USA, we can start by making up a number for Germany - 80 - and a number for the USA - 70. Next, the ratio of people using cell phones is 80/70=8/7 with the numerator being the people from Germany and the denominator being the number from the USA.
A pentagon and a abstract shape
Angle C and the 112 degree angle are supplementary, so angle C measures 180-112=68 degrees.
This means that by the exterior angle theorem, 
Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Distributive Property
<u>Algebra I</u>
<u>Calculus</u>
Derivatives
Derivative Notation
Derivative of a constant is 0
Basic Power Rule:
- f(x) = cxⁿ
- f’(x) = c·nxⁿ⁻¹
Derivative Rule [Product Rule]: ![\displaystyle \frac{d}{dx} [f(x)g(x)]=f'(x)g(x) + g'(x)f(x)](https://tex.z-dn.net/?f=%5Cdisplaystyle%20%5Cfrac%7Bd%7D%7Bdx%7D%20%5Bf%28x%29g%28x%29%5D%3Df%27%28x%29g%28x%29%20%2B%20g%27%28x%29f%28x%29)
Step-by-step explanation:
<u>Step 1: Define</u>

<u>Step 2: Differentiate</u>
- [Derivative] Product Rule:
 + (-8s - 9)\frac{d}{ds}[(-4s + 2)]](https://tex.z-dn.net/?f=%5Cdisplaystyle%20h%27%28s%29%20%3D%20%5Cfrac%7Bd%7D%7Bds%7D%5B%28-8s%20-%209%29%5D%28-4s%20%2B%202%29%20%2B%20%28-8s%20-%209%29%5Cfrac%7Bd%7D%7Bds%7D%5B%28-4s%20%2B%202%29%5D)
- [Derivative] Basic Power Rule:

- [Derivative] Simplify:

- [Derivative] Distribute [Distributive Property]:

- [Derivative] Combine like terms:

Topic: AP Calculus AB/BC (Calculus I/II)
Unit: Derivatives
Book: College Calculus 10e
this is using the straight line depreciation formula. you take the initial amount and subtract the amount that it loses each year times x