Answer:
Step-by-step explanation:
<u>Solving quadratic equation:</u>
- 5x² - 8x + 5 = 0
- x = (-b ± √b²-4ac)/2a
- x = (8 ± √8²-4*5*5)/2*5
- x = (8 ± √64-100)/10
- x = (8 ±√-36)/10
- x = (8 ± 6i)/10
- x = (4 ± 3i)/5
x = (r ± si)/t
r = 4, s = 3, t = 5
 
        
             
        
        
        
Answer:

Step-by-step explanation:
we know that

She drove from her house to the airport and back 2 times
so
Multiply the distance from her house to the airport by 4

 
        
             
        
        
        
Answer:
3.44571
Step-by-step explanation:
look at the number to the right of the decimal. if the number is higher than or is 5 round the number up, but if the number is less than 5 it will stay the same.
 
        
             
        
        
        
Answer: 5
Step-by-step explanation:
  1. You have the following expression given in the problem above:
 
 2. You can estimate the result by rounding the numerator and the denominator.
 3. As you can see, you can round up 97.5 to 100.
 4. Then, you can round up 1.96 to 2.
 5. Therefore, you have:
 
  
 
 6. Therefore, the result is 5.