K=4 would be the answer you’re looking for
Are u able to take a picture of the whole question?
Answer:
part 1) 0.78 seconds
part 2) 1.74 seconds
Step-by-step explanation:
step 1
At about what time did the ball reach the maximum?
Let
h ----> the height of a ball in feet
t ---> the time in seconds
we have

This is a vertical parabola open downward (the leading coefficient is negative)
The vertex represent a maximum
so
The x-coordinate of the vertex represent the time when the ball reach the maximum
Find the vertex
Convert the equation in vertex form
Factor -16

Complete the square


Rewrite as perfect squares

The vertex is the point 
therefore
The time when the ball reach the maximum is 25/32 sec or 0.78 sec
step 2
At about what time did the ball reach the minimum?
we know that
The ball reach the minimum when the the ball reach the ground (h=0)
For h=0



square root both sides


the positive value is

Answer:7 mins
Step-by-step explanation:
47 minus 19 equals 28 4 times 7 equals 8
Answer:
Hi there!
Your answer is:
B. 1.5
Step-by-step explanation:
The square root of 2.25 = 1.5
Check your work!
1.5×1.5 = 2.25!!✓
Hope this helps!