Answer:
Bradly finished more
Step-by-step explanation:
0.8 is equal to 8/10, which is equal to 80/100, which is equal to 80%, whereas Max is 8%. 80 > 8.
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Answer:
It's 5
Step-by-step explanation:
Answer:
![\large \boxed{\sf \ \ x = -\dfrac{\sqrt{33}+1}{4} \ \ or \ \ x = \dfrac{\sqrt{33}-1}{4} \ \ }](https://tex.z-dn.net/?f=%5Clarge%20%5Cboxed%7B%5Csf%20%5C%20%5C%20x%20%3D%20-%5Cdfrac%7B%5Csqrt%7B33%7D%2B1%7D%7B4%7D%20%5C%20%5C%20or%20%5C%20%5C%20x%20%3D%20%5Cdfrac%7B%5Csqrt%7B33%7D-1%7D%7B4%7D%20%5C%20%5C%20%7D)
Step-by-step explanation:
Hello, please find below my work.
![2x^2+x-4=0\\\\\text{*** divide by 2 both sides ***}\\\\x^2+\dfrac{1}{2}x-2=0\\\\\text{*** complete the square ***}\\\\x^2+\dfrac{1}{2}x-2=(x+\dfrac{1}{4})^2-\dfrac{1^2}{4^2}-2=0\\\\\text{*** simplify ***}\\\\(x+\dfrac{1}{4})^2-\dfrac{1+16*2}{16}=(x+\dfrac{1}{4})^2-\dfrac{33}{16}=0](https://tex.z-dn.net/?f=2x%5E2%2Bx-4%3D0%5C%5C%5C%5C%5Ctext%7B%2A%2A%2A%20divide%20by%202%20both%20sides%20%2A%2A%2A%7D%5C%5C%5C%5Cx%5E2%2B%5Cdfrac%7B1%7D%7B2%7Dx-2%3D0%5C%5C%5C%5C%5Ctext%7B%2A%2A%2A%20complete%20the%20square%20%2A%2A%2A%7D%5C%5C%5C%5Cx%5E2%2B%5Cdfrac%7B1%7D%7B2%7Dx-2%3D%28x%2B%5Cdfrac%7B1%7D%7B4%7D%29%5E2-%5Cdfrac%7B1%5E2%7D%7B4%5E2%7D-2%3D0%5C%5C%5C%5C%5Ctext%7B%2A%2A%2A%20simplify%20%2A%2A%2A%7D%5C%5C%5C%5C%28x%2B%5Cdfrac%7B1%7D%7B4%7D%29%5E2-%5Cdfrac%7B1%2B16%2A2%7D%7B16%7D%3D%28x%2B%5Cdfrac%7B1%7D%7B4%7D%29%5E2-%5Cdfrac%7B33%7D%7B16%7D%3D0)
![\text{*** add } \dfrac{33}{16} \text{ to both sides ***}\\\\(x+\dfrac{1}{4})^2=\dfrac{33}{16}\\\\\text{**** take the root ***}\\\\x+\dfrac{1}{4}=\pm \dfrac{\sqrt{33}}{4}\\\\\text{*** subtract } \dfrac{1}{4} \text{ from both sides ***}\\\\x = -\dfrac{1}{4} -\dfrac{\sqrt{33}}{4} \ \ or \ \ x = -\dfrac{1}{4} +\dfrac{\sqrt{33}}{4}](https://tex.z-dn.net/?f=%5Ctext%7B%2A%2A%2A%20add%20%7D%20%5Cdfrac%7B33%7D%7B16%7D%20%5Ctext%7B%20to%20both%20sides%20%2A%2A%2A%7D%5C%5C%5C%5C%28x%2B%5Cdfrac%7B1%7D%7B4%7D%29%5E2%3D%5Cdfrac%7B33%7D%7B16%7D%5C%5C%5C%5C%5Ctext%7B%2A%2A%2A%2A%20take%20the%20root%20%2A%2A%2A%7D%5C%5C%5C%5Cx%2B%5Cdfrac%7B1%7D%7B4%7D%3D%5Cpm%20%5Cdfrac%7B%5Csqrt%7B33%7D%7D%7B4%7D%5C%5C%5C%5C%5Ctext%7B%2A%2A%2A%20subtract%20%7D%20%5Cdfrac%7B1%7D%7B4%7D%20%5Ctext%7B%20from%20both%20sides%20%2A%2A%2A%7D%5C%5C%5C%5Cx%20%3D%20-%5Cdfrac%7B1%7D%7B4%7D%20-%5Cdfrac%7B%5Csqrt%7B33%7D%7D%7B4%7D%20%5C%20%5C%20or%20%5C%20%5C%20x%20%3D%20-%5Cdfrac%7B1%7D%7B4%7D%20%2B%5Cdfrac%7B%5Csqrt%7B33%7D%7D%7B4%7D)
Hope this helps.
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