Answer:
x = -1, 19
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
- Subtract Property of Equality
<u>Algebra I</u>
- Standard Form: ax² + bx + c = 0
- Factoring
- Multiple Roots
- Completing the Square: -b/(2a)
Step-by-step explanation:
<u>Step 1: Define</u>
2x² - 20x = x² - 19
<u>Step 2: Solve for </u><em><u>x</u></em>
- [Subtraction Property of Equality] Subtract x² on both sides: x² - 20x = -19
- Complete the Square [Addition Property of Equality]: x² - 20x + 100 = -19 + 100
- [Complete the Square] Simplify: (x - 10)² = 81
- [Equality Property] Square root both sides: x - 10 = ±9
- [Addition Property of Equality] Add 10 on both sides: x = 10 ± 9
- Evaluate: x = -1, 19
Well if i understand correctly the answer would be all of them added together
For (4, 3) the least common multiple (LCM) is 12.
Therefore, the least common denominator (LCD) is 12.
Rewriting as equivalent fractions with the LCD:
3/12, 8/12
Hope i helped!
It is the D answer.
Even though I cannot see the second equation, I know that this must be it. It is the only set of equations that properly states that she must work less than 15 hours combined (b + t)
