Answer:
2A/h - b = c
Step-by-step explanation:
A = 1/2(b + c)h
Multiply each side by 2
2A = (b + c)h
Divide each side by h
2A/h = (b + c)h/h
2A/h = (b + c)
Subtract b from each side
2A/h -b = (b-b + c)
2A/h - b = c
Answer: B
Step-by-step explanation:
Domain is x values
Range is y values
Domain you look from left to right. You can see it starts at -3, and it goes all the way to 2. NOT 4 BUT 2!! Since we are looking at the X.
Range.. WE ARE LOOKING AT THE LOWEST POINT!! LOWEST POINT FIRST!1 I cannot stress enough. The lowest y-value is -2, and it's maximum point is 4!
REMEMBER:
DOMAIN = X LEFT TO RIGHT
RANGE= Y LOWEST POINT TO HIGHEST
Answer:
![f^{-1}(x)= \frac{1}{2}x](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29%3D%20%5Cfrac%7B1%7D%7B2%7Dx)
Step-by-step explanation:
Given
![f(x) = 2x](https://tex.z-dn.net/?f=f%28x%29%20%3D%202x)
Required:
Find ![f^{-1}(x)](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29)
![f(x) = 2x](https://tex.z-dn.net/?f=f%28x%29%20%3D%202x)
Replace f(x) with y
![y = 2x](https://tex.z-dn.net/?f=y%20%3D%202x)
Swap both variables
![x = 2y](https://tex.z-dn.net/?f=x%20%3D%202y)
![2y = x](https://tex.z-dn.net/?f=2y%20%3D%20x)
Make y the subject
![y= \frac{1}{2}x](https://tex.z-dn.net/?f=y%3D%20%5Cfrac%7B1%7D%7B2%7Dx)
Replace y with f-1(x)
![f^{-1}(x)= \frac{1}{2}x](https://tex.z-dn.net/?f=f%5E%7B-1%7D%28x%29%3D%20%5Cfrac%7B1%7D%7B2%7Dx)
Answer:
X= -5
Step-by-step explanation:
y varies directly with x,
so y=kx
-34=k×2
k= -17
85= -17× X
X= -5
I think 37%......................................................