Answer:
Step-by-step explanation:
- Initial amount = 2112 g
- Time = 188 days
- Half-life = 47 days
188 days / 47 days = 4 periods
<u>Mercury left after 188 days:</u>
- 2112 * (1/2)^4 = 
- 2112* 1/16 =
- 2112/16 =
- 132 g
 
        
             
        
        
        
Answer:
25 doughnuts
Step-by-step explanation:
for 15 workers, 
the numbers of doughnuts =
5 doughnuts/3 workers × 15 workers
= 75/3 doughnuts
= 25 doughnuts
 
        
                    
             
        
        
        
Answer:
16 lessons
Step-by-step explanation:
12 divided by .75 = 16
 
        
                    
             
        
        
        
Answer: 4 1/10g^5+5 1/4
Step-by-step explanation:
 
        
             
        
        
        
Answer:

General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
<u>Algebra I</u>
- Average Rate of Change:  
Step-by-step explanation:
<u>Step 1: Define</u>
Interval -1 ≤ x ≤ 3
a = -1, b = 3
f(a) = f(-1) = 4
f(b) = f(3) = -4
<u>Step 2: Find Average</u>
- Substitute in variables [ARC]:                      
- Substitute:                                                    
- [Fraction] Subtract/Add:                              
- [Fraction] Divide:                                        