Step-by-step explanation:
The scientific notation of any number is given by :
a is any real no and b is any integer
The scientific notation of 345,000,000 should be but Jorden wrote 34.5×10⁷. He is incorrect. He should have shifted decimal before 4 such that power of 10 becomes 8.
Answer:
The time that the rocket will hit the ground is 12.87 seconds.
Step-by-step explanation:
Given : The rocket is launched from a tower . The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation.
To find : The time that the rocket will hit the ground ?
Solution :
When the rocket hit the ground i.e. height became zero y=0,
Equation is
Substitute y=0,
Using quadratic formula,
Reject negative value.
The time taken is 12.87 seconds.