Answer:
<h3>6 days</h3>
Step-by-step explanation:
Given the inequality expression of the total cost (c) in dollars of renting a car for n days as c ≥ 125 + 50n
To get the maximum number of days for which a car could be rented if the total cost was $425, substitute c = 425 into the expression and find n
425 ≥ 125 + 50n
Subtract 125 from both sides
425 - 125 ≥ 125 + 50n - 125
300≥ 50n
Divide both sides by 50
300/50≥50n/50
6 ≥n
Rearrange
n≤6
<em>Hence the maximum number of days for which a car could be rented if the total cost was $425 is 6days</em>
<em></em>
So, f[x] = 1/4x^2 - 1/2Ln(x)
<span>thus f'[x] = 1/4*2x - 1/2*(1/x) = x/2 - 1/2x </span>
<span>thus f'[x]^2 = (x^2)/4 - 2*(x/2)*(1/2x) + 1/(4x^2) = (x^2)/4 - 1/2 + 1/(4x^2) </span>
<span>thus f'[x]^2 + 1 = (x^2)/4 + 1/2 + 1/(4x^2) = (x/2 + 1/2x)^2 </span>
<span>thus Sqrt[...] = (x/2 + 1/2x) </span>
(x+4), (y-1) because the figure is translated 4 units to the right and 1 down.
Answer:
3.9 units
Step-by-step explanation:
We are given that,
Time taken by each swing = 2.2 seconds
The pendulum formula is given by,
, where T is the time taken and L is the length of the swing.
So, we have,
![2.2= 2\pi \sqrt{\frac{L}{32}}](https://tex.z-dn.net/?f=2.2%3D%202%5Cpi%20%5Csqrt%7B%5Cfrac%7BL%7D%7B32%7D%7D)
i.e. ![\frac{2.2}{2\pi}=\sqrt{\frac{L}{32}}](https://tex.z-dn.net/?f=%5Cfrac%7B2.2%7D%7B2%5Cpi%7D%3D%5Csqrt%7B%5Cfrac%7BL%7D%7B32%7D%7D)
i.e. ![(\frac{2.2}{2\pi})^{2}=\frac{L}{32}](https://tex.z-dn.net/?f=%28%5Cfrac%7B2.2%7D%7B2%5Cpi%7D%29%5E%7B2%7D%3D%5Cfrac%7BL%7D%7B32%7D)
i.e. ![L=32\times (\frac{2.2}{2\pi})^{2}](https://tex.z-dn.net/?f=L%3D32%5Ctimes%20%28%5Cfrac%7B2.2%7D%7B2%5Cpi%7D%29%5E%7B2%7D)
i.e. ![L=32\times \frac{4.84}{4 \pi^2}](https://tex.z-dn.net/?f=L%3D32%5Ctimes%20%5Cfrac%7B4.84%7D%7B4%20%5Cpi%5E2%7D)
i.e. ![L=32\times \frac{1.21}{\pi^2}](https://tex.z-dn.net/?f=L%3D32%5Ctimes%20%5Cfrac%7B1.21%7D%7B%5Cpi%5E2%7D)
i.e. ![L=\frac{38.72}{9.87}](https://tex.z-dn.net/?f=L%3D%5Cfrac%7B38.72%7D%7B9.87%7D)
i.e. L = 3.923 units
So, rounded to tenths, the length of the swing is 3.9 units.
Answer:
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