The answer is the last option.
Answer:
4.89 hours or you can round it to make 4.8 or 5 hours
Step-by-step explanation:
22/4.5=4.888...
I believe the answer is 4
The rocket will take 9.25 seconds to return to ground
<em><u>Solution:</u></em>
Given that toy rocket is launched vertically upward from ground level with an initial velocity of 148 ft per second
<em><u>Height "h" after "t" seconds is given by equation:</u></em>
To find: time taken by rocket to return to ground
The time taken by rocket to return to ground is found by substituting h(t) = 0 in above equation
First take "t" as common term
Zero product property. The zero product property states that if a⋅b = 0 then either a or b equal zero. This basic property helps us solve equations like (x+2)(x-5) = 0
So for above equation we get,
-16t + 148 = 0
-16t = -148
t = 9.25
When t = 0 , the rocket would not left the ground. So ignore t = 0
So t = 9.25
So the rocket will take 9.25 seconds to return to ground
Answer:
$8.70
Step-by-step explanation:
58* .15= 8.7