A book falls from a shelf that is 5 feet above the floor. A model for the height h in feet if an object dropped from an initial height of h₀ feet is h=-16t² + h₀, where t is the time in seconds after the object is dropped. Use this model to determine approximately how long it took for the book to reach the ground.

About 0.559 seconds

Step-by-step explanation:

The height equation is:

Where is the initial height of the book, which is 5, so we can write:

Now, we want time it took for the book to reach ground (h = 0)

So, we substitute h = 0 and solve for t:

It took about 0.559 seconds for the book to reach the ground

change of stock price/initial stock price on friday * total stock value = change of stock value

0.89/73.73 *x = 42.72

x=3539.04 = total stock value at initial stock price on friday .

total stock value at initial stock price on friday/ initial stock price on friday = number of shares

3539.04/73.73 = 48 shares

they own 48 shares of this stock

the answer is 3.54 g/cm^3

step-by-step explanation:

d=mass/volume therefore d= 46/13 which is a simple division equation.