Answer:
2.5 second
Step-by-step explanation:
The equation is missing in the question.
The equation is, 
, where 'h' is the height and 't' is time measured in second.
Now we know to reach its maximum height, h in t seconds, the derivative of h with respect to time t is given by :
Now the differentiating the equation with respect to time t, we get
For maximum height,
So, 
Therefore, the ball takes 2.5 seconds time to reach the maximum height.
<h3>250° is a reflex angle.</h3>
<h3>80° is an acute angle.</h3>
Isometry is defined as the <span> transformation that is invariant with respect to the distance
The statement that is true for isometry that is corrrect is
</span><span>The preimage and the image are congruent.
</span>so correct option is A as both the preimage and image are congruent
hope it helps<span />
Answer:
ways.
Step-by-step explanation:
is the number of ways in which 
distinct objects are selected from a pile of 
distinct objects.
In our question,there are a total of 
people.
So,
.
Given that three are selected at random.
So,
.
So,the answer is ways.
