Answer:
111,117,177,777,771,711,717,171
Step-by-step explanation:
-t=9(t-10)
-t=9t-90
90=9t+t
90=10t
90/10=t
9=t
Isn't it 89 not 19 and if its that, its 12 and 77
Answer:
f(4) = -8
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) = -x - 4
f(4) is x = 4
<u>Step 2: Evaluate</u>
- Substitute in <em>x</em>: f(4) = -4 - 4
- Subtract: f(4) = -8