Answer:
As per the statement:
The path that the object takes as it falls to the ground can be modeled by:
h =-16t^2 + 80t + 300
where
h is the height of the objects and
t is the time (in seconds)
At t = 0 , h = 300 ft
When the objects hit the ground, h = 0
then;
-16t^2+80t+300=0
For a quadratic equation: ax^2+bx+c=0 ......[1]
the solution for the equation is given by:
On comparing the given equation with [1] we have;
a = -16 ,b = 80 and c = 300
then;
Simplify:
= -2.5 sec and 
= 7.5 sec
Time can't be in negative;
therefore, the time it took the object to hit the ground is 7.5 sec
Answer:
The total cost is $345
Step-by-step explanation:
Zoe purchased a barbecue grill originally priced at $600
Discount % = 50%
So, cost after discount = 
Cost after discount =300
Sales tax in Fairfax is 15%
So, cost including tax = 300+0.15(300)
Cost including tax = 345
Hence The total cost is $345
Answer:
True
Step-by-step explanation:
if you really think about it you can use y for anything an dy is the most replaceable to have so i agree with your think hope it help man
Answer:
7
Step-by-step explanation:
Regular polygons have the same number of lines of symmetry as they do sides
