Answer:
step 3
Step-by-step explanation:
it's C on edg
We need to find time taken to reach arrow to its maximum.
The path of the arrow can be modeled with the equation .
Differentiating the given equation w.r.t x and equate it to zero.
Putting value of x = 21 sec in given equation, we get :
Therefore, time taken to reach maximum height is 21 seconds.
Firstly, add 7 on both sides of the equation:
Next, before you can subtract 3/4x on both sides, you first have to find the LCD, or lowest common denominator, of 2 and 4. To find it, you would list the multiples of both and the lowest multiple they share is their LCD. In this case, the LCD is 4. Multiply 5/2 by 2/2 and 3/4 by 1/1:
Now subtract 3/4x on both sides of the equation:
Lastly, multiply both sides by 4/7 and <u>your answer will be x = 12.</u>
Answer:
Step-by-step explanation:
We can start solving this problem by doing a drawing of London Eye. (See attached picture).
From the picture, we can see that the tourists will start at the lowest point of the trajectory, which means we can make use of a -cos function. So the function will have the following shape:
where:
A=amplitude
= angular speed.
t= time (in minutes)
b= vertical shift.
In this case:
A= radius = 67.5 m
where the frequency is the number of revolutions it takes every minute, in this case:
so:
and
b= radius, so
b=A
b=67.5m
so we can now build our equation:
which can be factored to:
You can see a graph of what the function looks like in the end on the attached picture.
1 is 6
2 is 6
3 is 6
4 is 6
5 is 6
6 is 6