Answer:
Ball hits the ground after 4.5 sec
Step-by-step explanation:
Let a -1, so that the leading coefficient is positive
So our quadratic is

The key coefficients of two binomial variables can be 1 and 16, or 2 and 8, or 4 and 4, for the leading coefficient of 16.
Yet they can't actually be 4 and 4 because the linear (x) term coefficient has to be a multiple of 4, which it isn't and leading coefficients 1 and 16 on the binomial factors is not likely.
So, 2 and 8 taken as the leading coefficients of two binomial factors.
For constant 405, possible factorizations are 

Taking first factor, thus we find negative value for given time t. But second time equivalent to zero gives the value of 4.5 for t
Thus ball hits the ground after 4.5 sec
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Answer: I believe it is "It also has a reflectional symmetry
Step-by-step explanation: Because even if you rotate the picture if you fold it in half it will fit perfectly with each other
Answer:
102 actually just add it up
Step-by-step explanation:
add it up
Hope this helps! Because when you would fill in the variables 0=0 which which make the expression too that they’d equal the same.