Answer:
The answer is : x = 9.505 and x = -1.005
Step-by-step explanation:
To solve the quadratic equation use the formula :
![x=\frac{-b+\sqrt{b^{2}-4ac } }{2a}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-b%2B%5Csqrt%7Bb%5E%7B2%7D-4ac%20%7D%20%7D%7B2a%7D)
Where a is the coefficient of x² , b is the coefficient of x and c is the numerical term
∵ a = 18 , b = -153 and c = -172
∴ ![x=\frac{-(-153)+\sqrt{(-153)^{2}-4(18)(-172) } }{2(18)}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B-%28-153%29%2B%5Csqrt%7B%28-153%29%5E%7B2%7D-4%2818%29%28-172%29%20%7D%20%7D%7B2%2818%29%7D)
![x = \frac{18+\sqrt{35793} }{36} &x=\frac{18-\sqrt{35793} }{36}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B18%2B%5Csqrt%7B35793%7D%20%7D%7B36%7D%20%26x%3D%5Cfrac%7B18-%5Csqrt%7B35793%7D%20%7D%7B36%7D)
∴ x = 9.505 and x = -1.005
Answer: D. X = 6 maps to y = 2
Step-by-step explanation:
i guessed and got it right lol
Answer:
15
Step-by-step explanation:
Substitute a and b then
Follow PEMDAS
Hope this helps! :)
Same side interior angles are not always congruent
Answer:
Divide 9 from both sides.
Step-by-step explanation:
The first step to solving this equation is to add 23 to both sides.
9x - 23 (+23) = 49 (+23)
9x = 49 + 23
9x = 72
The second step is to isolate the x and divide 9 from both sides:
(9x)/9 = (72)/9
x = 72/9
x = 8
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