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Serggg [28]
3 years ago
15

PLEASE ANSWER!!!!WILL MARK BRAINLIEST!!!

Mathematics
1 answer:
Setler79 [48]3 years ago
5 0
Hope this is helpful

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18 seats in 2 rows = <br> seats in 1 row
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What is 3/5 ÷ 1 7/10 worth 10 points !! Thank you :D
Stella [2.4K]
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4 years ago
Solve the quadratic equation by completing the square. (Enter your answers as a comma-separated list.)x2 − 6x − 27 = 0
Alexus [3.1K]
x^2 - 6x - 27 = 0 \\ \\a=1, \ b=-6 , \ c= -27 \\ \\ \Delta =b^2-4ac = (-6)^2 -4\cdot1\cdot (-27) = 36+108 =144 \\ \\x_{1}=\frac{-b-\sqrt{\Delta} }{2a}=\frac{6-\sqrt{144}}{2 }=\frac{ 6-12}{2}=\frac{-6}{2}=-3 \\ \\x_{2}=\frac{-b+\sqrt{\Delta }}{2a}= \frac{6+\sqrt{144}}{2 }=\frac{ 6+12}{2}= \frac{18}{2}=9 \\ \\ \\ Answer : \ x= -3 \ \ or \ \ x= 9
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4 years ago
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