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The maximum height of the projectile is the maximum point that can be gotten from the projectile equation
The projectile reaches the maximum height after 5 seconds
The function is given as:

Differentiate the function with respect to t

Set to 0

So, we have:

Collect like terms


Solve for t


Hence, the projectile reaches the maximum after 5 seconds
Read more about maximum values at:
brainly.com/question/6636648
(6 times 2x) + (6 times 5y)
Choice 4 is incorrect. The angles aren’t similar nor congruent.
Answer:
B. SUBTRACTION PROPERTY OF EQUALITY
Step-by-step explanation: