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:
Answer:
C.
Step-by-step explanation:
Given
Required
Equation of line
Let m represents the slope of the line;
m is calculated as thus
By substituting the right values in the formula above;
becomes
Multiply both sides by
Reorder
Hence, the equation that represents the line is
Answer:
42.84
Step-by-step explanation:
3.57*12=42.84
Answer:
x < 3
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Multiplying 20 by 320% is the same thing as multiplying 20 by 3.2, or 20(3.2)=64. Hope this helped!