Answer:
x = -50
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
- Multiplication Property of Equality
- Division Property of Equality
- Addition Property of Equality
- Subtraction Property of Equality<u>
</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
-2/5x - 2 = 18
<u>Step 2: Solve for </u><em><u>x</u></em>
- [Addition Property of Equality] Add 2 on both sides: -2/5x = 20
- [Division Property of Equality] Divide -2/5 on both sides: x = -50
Answer:
88
Step-by-step explanation:
Answer:
- 1/4
- 3/5
Step-by-step explanation:
You find the part by expressing the ratio as a fraction, then simplifying.
1. 5/20 = (1·5)/(4·5) = (1/4)·(5/5) = 1/4
5 is 1/4 of 20.
__
2. 12/20 = (3·4)/(5·4) = (3/5)·(4/4) = 3/5
12 is 3/5 of 20.
Answer:
B. 12.4 years
Step-by-step explanation:
The rule of 72 says the doubling period multiplied by the interest rate in percent is equal to 72. Here, we're concerned with the doubling of the price index. That period will be ...
72/5.8 ≈ 12.4 . . . years