Answer:
Yes, he made an error in Step 3. He should have subtracted 2 from both sides.
Step-by-step explanation:
Answer:
The answer to your question is 2 seconds
Step-by-step explanation:
Data
function y = -14x² + 56x
maximum height = ?
Process
1.- Find the derivative of the function
y' = -28x + 56
2.- Equal to zero the result
-28x + 56 = 0
3.- Solve for x
-28x = - 56
x = -56/-28
x = 2
4.- Conclusion
It takes to the ball 2 seconds to reach the maximum height.
-0.258 is a decimal number in which 2 is at the tenth place, 5 is at the hundredth place and 8 is at the thousandth place.
Therefore, the number in the fraction form is -
The fraction in the simplest form is -
-0.312 is a decimal number and its fraction form is - 
The fraction in the simplest form is 
-2.32 is a decimal number and its fraction in the simplest form is

-1.64 is a decimal number and its mixed number in the simplest form is 
6.012 is a decimal number and the number in mixed number form is 
-12.405 is a decimal number and the number in mixed number form is
