Simplify. 4−16÷4+42 −16 13 15 16PLEASE HELP
2 answers:
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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