Answer:
Step-by-step explanation:
is our quadratic,where h(t) is the height of the object after t seconds. If we are looking for how long, t, it takes the object to hit the ground, h(t) will be equal to 0 since the height of something on the ground is 0. We set the quadratic equal to zero and factor it using the quadratic formula:
and
and
and
the 2 solutions are:
and

and since time can never be negative, we know that it takes 4.98 seconds for the rock to hit the ground under the given conditions.
Answer: isolate the exponent term on one side of the equation, and then apply the appropriate radical to both sides of the equation.
Step-by-step explanation:

<em><u>In mathematics, a cylinder is a three-dimensional solid that holds two parallel bases joined by a curved surface, at a fixed distance. These bases are normally circular in shape (like a circle) and the center of the two bases are joined by a line segment, which is called the axis</u></em>