Answer: x = ![1\frac{1}{6}](https://tex.z-dn.net/?f=1%5Cfrac%7B1%7D%7B6%7D)
Step-by-step explanation:
7/12 = 1/2x
Multiply by 2
14/12=x
x = 1 1/6
Hope it helps <3
Answer:
11.49m
Step-by-step explanation:
Answer:
A quadratic function generally does not have an inverse except on a restricted domain. If the domain of the <em>original</em> function is restricted to x ≥ 0, then the inverse function is ...
![f^{-1}(x)=\displaystyle\sqrt{\frac{x-4}{5}}](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29%3D%5Cdisplaystyle%5Csqrt%7B%5Cfrac%7Bx-4%7D%7B5%7D%7D)
Step-by-step explanation:
Start by interchanging x and "y", then solve for y.
y = 5x² +4 . . . . . . given
x = 5y² +4 . . . . . . with x and y interchanged
x -4 = 5y² . . . . . . subtract 4
(x -4)/5 = y² . . . . . divide by 5
√((x -4)/5) = y . . . take the square root . . . . x ≥ 4, y ≥ 0
Then, ...
![f^{-1}(x)=\displaystyle\sqrt{\frac{x-4}{5}}](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29%3D%5Cdisplaystyle%5Csqrt%7B%5Cfrac%7Bx-4%7D%7B5%7D%7D)
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The graph shows the original f(x) and the "inverse", called f1(x). Note that it is only a reflection across y=x of the right half of the original function. That is, the inverse only exists for the original function when its domain is restricted to x ≥ 0. (The domain of the inverse function is x ≥ 4.)
Answer: B.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Let x be the amount at 5%
Then 2200 - x is the amount at 3%
<u>The total interest is:</u>
- 0.05x + (2200 - x)*0.03 = 78.50
- 5x + (2200 - x)*3 = 7850
- 5x + 6600 - 3x = 7850
- 2x = 7850 - 6600
- 2x = 1250
- x = 625
<u>Find the amount at 3%:</u>