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Leona [35]
3 years ago
7

3. Find the value of x and y. (80-x) ya (3x +20)° Help meeeee

Mathematics
1 answer:
Mamont248 [21]3 years ago
7 0

Answer:

thisw is hun764

Step-by-step explanation:

now make my account brainliest

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oop02

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7 0
4 years ago
4x^2 = 92 + 7x solve the equation using the guadratic formula, show all work
katovenus [111]
4x^2=92+7x\ \ \ \ |-4x^2\\\\-4x^2+7x+92=0\\\\a=-4;\ b=7;\ c=92\\\\b^2-4ac=7^2-4\cdot(-4)\cdot92=49+1472=1521\\\\\sqrt{b^2-4ac}=\sqrt{1521}=39\\\\x_1=\dfrac{-b-\sqrt{b^2-4ac}}{2a};\ x_2=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\x_1=\dfrac{-7-39}{2\cdot(-4)}=\dfrac{-46}{-8}=\dfrac{23}{4}\\\\x_2=\dfrac{-7+39}{2\cdot(-4)}=\dfrac{32}{-8}=-4


\text{Answer:}\ A.\ \left\{\dfrac{23}{4};\ -4\right\}
4 0
4 years ago
2347 is rational or not
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Rational of course, every natural number, full number and every number that can be written as fraction are rational
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