We need to find a common denominator for the bottom half of the fraction. To do so, we will first factor
![x^2-3x-4](https://tex.z-dn.net/?f=x%5E2-3x-4)
.
![x^2-3x-4 = (x+1)(x-4)](https://tex.z-dn.net/?f=x%5E2-3x-4%20%3D%20%28x%2B1%29%28x-4%29)
Notice that both denominators have a x+1 in common. To get the common denominator, we need to multiple the
![\frac{5}{x+1}](https://tex.z-dn.net/?f=%20%5Cfrac%7B5%7D%7Bx%2B1%7D%20)
by its missing piece, (x-4)
![\frac{5(x-4)}{(x+1)(x-4)} - \frac{x+4}{(x+1)(x-4)}](https://tex.z-dn.net/?f=%20%5Cfrac%7B5%28x-4%29%7D%7B%28x%2B1%29%28x-4%29%7D%20-%20%5Cfrac%7Bx%2B4%7D%7B%28x%2B1%29%28x-4%29%7D%20)
Combine:
![\frac{4(x-6)}{(x+1)(x-4)}](https://tex.z-dn.net/?f=%20%5Cfrac%7B4%28x-6%29%7D%7B%28x%2B1%29%28x-4%29%7D%20)
When dividing two fractions, we can flip the second one and multiply.
![\frac{1}{3(x+1)(x-1)}](https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B3%28x%2B1%29%28x-1%29%7D)
×
![\frac{(x+1)(x-4)}{4(x-6)}](https://tex.z-dn.net/?f=%20%5Cfrac%7B%28x%2B1%29%28x-4%29%7D%7B4%28x-6%29%7D%20)
There is an (x+1) in the numerator and denominator that cancel.
Answer:
Answer:
27; C; B; D
Step-by-step explanation:
1. B = 120 degrees, and C = 60 degrees. Q = 90 degrees, because B + C = 180 degrees, and the triangle BQC has angle B and angle C bisected. If B = 120 degrees, then the height is equal to 9 sqrt 3, which makes BC equal to 27.
2.C
3. B (You don't actually know if any of the sides are parallel.)
4. D
min. = 0.58
max. = 1.38
Range = max - min = 1.38 - 0.58 = 0.8
Answer
0.8
I know this is probably too late but its 60%
1 over 4 is the correct answer