Answer:


Where:
a= 8, b =-48, c = -7 and replacing we got:


And since the time cannot be negative the correct answer for this cae would be t = 6.142 s
Step-by-step explanation:
If the question is: When will the object hit the ground at when the time is how many seconds?
We have the function for the heigth given by:

And we want to find the time where
so we can set like this the condition:

And we can rewrite the expression like this:

We can divide both sides of the equation by 2 and we got:

And we can use the quadratic equation to solve for t like this:

Where:
a= 8, b =-48, c = -7 and replacing we got:


And since the time cannot be negative the correct answer for this cae would be t = 6.142 s
40,000,000+3,000,000+80,000+700
Answer:
x = 16
Step-by-step explanation:
∠ ABF + ∠ FBC = ∠ ABC , substitute values
7x + 20 + 2x - 5 = 159 , that is
9x + 15 = 159 ( subtract 15 from both sides )
9x = 144 ( divide both sides by 9 )
x = 16
Answer:
It is not possible to make a triangle with these dimensions. Hope this helps!
Step-by-step explanation: