Answer:
1a. x=2 1b. x= -1
Step-by-step explanation:
Answer:
f(-9) = 243
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
f(x) = 4x² + 7x - 18
f(-9) is x = -9
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em>: f(-9) = 4(-9)² + 7(-9) - 18
- Evaluate Exponents: f(-9) = 4(81) + 7(-9) - 18
- Multiply: f(-9) = 324 - 63 - 18
- Subtract: f(-9) = 261 - 18
- Subtract: f(-9) = 243
Equation pi X r^2 first one = 158.37
second one 50.27
Answer:
The given statement is true.
Step-by-step explanation:
A basic variable in a linear system is a variable that corresponds to a pivot column in the coefficient matrix.
The statement is true.
This statement is the definition of a basic variable.
We can also say that a basic variables are 'n' variables that can take any value other than zero.
