Answer:
a
Step-by-step explanation:
if it -4 or 4 it would be undefined
 
        
             
        
        
        
Food = 1/4
gasoline = 3/5 
Total = 1/4 + 3/5 = 17/20
17/20 = 272
1/20 = 272 ÷ 17 = 16
20/20 = 16 x 20 = $320
        
             
        
        
        
Answer:
i think its the vertex
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
see below
Step-by-step explanation:
<h3>Given</h3>
- Distance is 142.2 m, correct to 1 decimal place
- Time is 7 seconds,  correct to nearest second
<h3>To find:</h3>
- Upper bound for the speed
<h3>Solution </h3>
<em>Upper bound for the speed  = upper bound for distance/lower bound for time</em>
- Upper bound for distance = 142.25 m  (added 0.1/5 = 0.05)
- Lower bound for time = 6.5 seconds  (subtracted 1/2 = 0.5)
<u>Then, the speed is:</u>
- 142.25/6.5 = 21.88 m/s
- 21.88 = 21.9 m/s correct to 1 decimal place
- 21.88 = 22 m/s correct to nearest m/s