Answer:
6
Step-by-step explanation:
(2-1)(4-2)+9
(1)(2)+9
2+9
11
Answer:
6x^2 +12x -1
Step-by-step explanation:
The perimeter is the sum of the two leg lengths and the base length:
P = 2(3x^2 +4x +2) +(4x -5)
= 6x^2 +8x +4 +4x -5
P = 6x^2 +12x -1
Answer:
(12x + 19) + (22x - 9) = 180°, x = 5
Step-by-step explanation:
Supplementary angles are 2 angles that adds up to 180°
Another words,
(12x + 19) + (22x - 9) = 180°
Now we solve for x by combining like terms:
34x + 10 = 180°
Subtract 10 on both sides:
34x = 170°
Divide 34 on both sides:
x = 5
Answer:
The answer are
A.
![{f}^{ - 1} (x) = \frac{x + 3}{x - 2}](https://tex.z-dn.net/?f=%20%7Bf%7D%5E%7B%20-%201%7D%20%28x%29%20%3D%20%20%5Cfrac%7Bx%20%2B%203%7D%7Bx%20-%202%7D%20)
B.
![{f}^{ - 1} ( - 3) = 0](https://tex.z-dn.net/?f=%20%7Bf%7D%5E%7B%20-%201%7D%20%28%20-%203%29%20%3D%200)
Step-by-step explanation:
To find the infers we do that
![f(x) = \frac{2 x + 3}{x - 1 } \\ (x - 1)f(x) = 2x + 3 \\ xf(x) - f(x) = 2x + 3 \\ xf(x) - 2x = f(x) + 3 \\ x(f(x) - 2) = f(x) + 3 \\ x = \frac{f(x) + 3}{f(x) - 2} \\ then \: \\ {f}^{ - 1} (x) = \frac{x + 3}{x - 2} \\ then \\ {f }^{ - 1} ( - 3) = \frac{ - 3 + 3}{ - 3 + 2} = 0](https://tex.z-dn.net/?f=f%28x%29%20%3D%20%20%5Cfrac%7B2%20x%20%2B%203%7D%7Bx%20-%201%20%7D%20%20%5C%5C%20%28x%20-%201%29f%28x%29%20%3D%202x%20%2B%203%20%5C%5C%20xf%28x%29%20-%20f%28x%29%20%3D%202x%20%2B%203%20%5C%5C%20xf%28x%29%20-%202x%20%3D%20f%28x%29%20%2B%203%20%5C%5C%20x%28f%28x%29%20-%202%29%20%3D%20f%28x%29%20%2B%203%20%5C%5C%20%20x%20%3D%20%20%5Cfrac%7Bf%28x%29%20%2B%203%7D%7Bf%28x%29%20-%202%7D%20%20%5C%5C%20then%20%5C%3A%20%20%5C%5C%20%20%7Bf%7D%5E%7B%20-%201%7D%20%28x%29%20%3D%20%20%5Cfrac%7Bx%20%2B%203%7D%7Bx%20-%202%7D%20%20%5C%5C%20then%20%5C%5C%20%20%7Bf%20%7D%5E%7B%20-%201%7D%20%28%20-%203%29%20%3D%20%20%5Cfrac%7B%20-%203%20%2B%203%7D%7B%20-%203%20%2B%202%7D%20%20%3D%200)