Answer:
12
Step-by-step explanation:
12/2=6
replace x with 12
Answer:
After 22 seconds the projectile reach its maximum height of 4,840 units
Step-by-step explanation:
we have

This is a vertical parabola downward (because the leading coefficient is negative)
The vertex is a maximum
Find out the coordinates of the vertex
Convert the quadratic equation in vertex form
Factor -10

Complete the square


Rewrite as perfect squares

The vertex is the point (22,4,840)
therefore
After 22 seconds the projectile reach its maximum height of 4,840 units
Answer:
9
Step-by-step explanation:
10a+7
<u>10(1/5)</u> + 7
<u>2+7</u>
9
Answer:
O.225
Step-by-step explanation:
Two negatives = positive