the bus to Leeds departs every 36 mins and the bus to Manchester leaves every 45 mins they leave the station at 10am one morning
1 answer:
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Answer:
General Formulas and Concepts:
<u>Pre-Algebra</u>
- Order of Operations: BPEMDAS
<u>Algebra I</u>
- Standard Form: ax² + bx + c = 0
- Quadratic Formula:
<u>Algebra II</u>
- Imaginary Roots: √-1 = i
- Standard Form: a + bi
Step-by-step explanation:
<u>Step 1: Define</u>
-4x² - 4x - 9 = 0
a = -4
b = -4
c = -9
<u>Step 2: Find roots</u>
- Substitute:
- Exponents:
- Multiply:
- Subtract:
- Factor:
- Simplify:
- Factor:
- Divide:
- Expand:
- Simplify:
- Evaluate: