Answer:
x = 1/2, 7/2
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
<u>Algebra I</u>
- Completing the Square: (b/2)²
- Factoring
Step-by-step explanation:
<u>Step 1: Define</u>
4x² - 16x + 5 = -2
<u>Step 2: Solve for </u><em><u>x</u></em>
- Isolate <em>x </em>terms: 4x² - 16x = -7
- Factor GCF: 4(x² - 4x) = -7
- Isolate <em>x </em>terms: x² - 4x = -7/4
- Complete the Square: x² - 4x + 4 = -7/4 + 4
- Simplify: (x - 2)² = 9/4
- Square root both sides: x - 2 = ±3/2
- Isolate <em>x</em>: x = 2 ± 3/2
- Evaluate: x = 1/2, 7/2
You add all the numbers then divide by how many numbers you have.
(12+15+6)/3 = 11
10 + 20 = 30 total balls.
Picking red = 10/30 = 1/3
After picking one ball there are 29 balls left.
Picking a yellow next is 20/29
Then there are 28 balls left and 19 yellow left, so picking another yellow would be 19/28
The probability of picking red first then two yellow = 1/3 x 20/29 x 19/28 = 95/609
I’m pretty sure it would be:
70 + 20x = 60 + 15x ????