Answer: no
Step-by-step explanation:
4÷5 equals 0.8
While 1 × 1/4 equals 0.25
Answer:
16 and 82 degrees
Step-by-step explanation:
You can sum all of the angles together and solve for x.
(x - 1) + (5x - 3) + (5x - 3) = 180
11x - 7 = 180
11x = 187
x = 17
The first angle is 16 degrees. (17 - 1)
The other two angles are 82 degrees(5(17) - 3)
The domain of the function is all real numbers except 2 and -1
Step-by-step explanation:
Domain is the set of inputs of a function on which the function is defined.
Given function is:
![R(x) = \frac{x}{x^2-x-2}](https://tex.z-dn.net/?f=R%28x%29%20%3D%20%5Cfrac%7Bx%7D%7Bx%5E2-x-2%7D)
In case of a function involving fraction, the function is undefined if the denominator is zero so in order to find the domain of the function algebraically , we have to find the values on which the function will be undefined
![x^2-x-2 = 0\\x^2-2x+x-2 = 0\\x(x-2)+1(x-2) = 0\\(x+1)(x-2) = 0\\x+1 = 0 => x=-1\\x-2=0 = > x=2](https://tex.z-dn.net/?f=x%5E2-x-2%20%3D%200%5C%5Cx%5E2-2x%2Bx-2%20%3D%200%5C%5Cx%28x-2%29%2B1%28x-2%29%20%3D%200%5C%5C%28x%2B1%29%28x-2%29%20%3D%200%5C%5Cx%2B1%20%3D%200%20%3D%3E%20x%3D-1%5C%5Cx-2%3D0%20%3D%20%3E%20x%3D2)
The function will be undefined on x=-1 and x=2
So,
The domain of the function is all real numbers except 2 and -1
Keywords: Domain, functions
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