The given function is
According to this function, the starting height of the rocket is 20 feet because that's the initial condition of the problem stated by the independent term.
Additionally, we find the maximum height by calculating the vertex of the function V(h,k).
Where a = -16 and b = 300.
Then, we find k by evaluating the function
Hence, the maximum height is 1426.25 feet.
At last, to know the time need to hit the ground, we just use h=9.375 and we multiply it by 2
Hence, the rocket hits the ground after 18.75 seconds.
Answer:
She should have about $150
Step-by-step explanation:
If you round all the numbers you get..
140-50-20+80
140-50-20=70
70+80=150
Answer:
The speed of the plane in still air is 89.83 mph and the speed of air is 8.17 mph.
Step-by-step explanation:
Let the speed of the plane in still air is u mph and the speed of the wind is v mph.
Now, the aircraft flew 490 miles in 5 hours with the wind.
Hence, ........ (1)
Now, the aircraft flew 490 miles in 6 hours against the wind.
So, ............ (2)
Now, adding equations (1) and (2) we get,
2u = 179.67
⇒ u = 89.83 mph
Now, from equation (1) we get,
v = 98 - u = 98 - 89.83 = 8.17 mph.
Therefore, the speed of the plane in still air is 89.83 mph and the speed of air is 8.17 mph. (Answer)
<h3>
Answer:</h3>
D. an = 14 - 1.5n
<h3>
Step-by-step explanation:</h3>
Selection D is the only one that works to give a1 = 12.5.
0,-3 is the answer. This is the answer because it says what is the solution