The object takes 12 minutes to land on the ground.
Explanation:
Given that the equation for the object's height s at time t minutes after the launch is 
We need to determine the time that it takes for the object to land on the ground.
<u>Time taken:</u>
The time t of an object can be determined by substituting 
Thus, we have,
Switch sides,
Thus, we get,
Let us solve the equation using the quadratic formula.
Thus, the values of t are 
and 
Simplifying, we get,
and 
and 
Since, the value of t cannot be negative, then
Thus, the object takes 12 minutes to land on the ground.
Not sure what you were looking for see attached Answer:
Answer:
82
Step-by-step explanation:
You are looking for the hypotenuse.
c = ?
a = 80
b = 18
c^2 = a^2 + b^2
c^2 = 18^2 + 80^2
c^2 = 324 + 6400
c^2 = 6724
sqrt(c^2) = sqrt(6724)
c = 82 inches
His money in the savings account is given by m(t)= 
The rate at which he is saving money can be obtained by differentiating the function.
m'(t)= 100t+100
So, in one year he saves
100
1+100=200
In two years he saves
1002+100=300
In three years he saves
1003+100=400
Therefore, time taken to save 1000 dollars is
100t+100=1000
100t=900
t=9
Therefore, it will take 9 years to save $1000.
Answer:
2y-8
Step-by-step explanation:
-2y-8+4y
add like terms
2y-8
