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Troyanec [42]
3 years ago
8

I need help please thank

Mathematics
1 answer:
laiz [17]3 years ago
6 0
Distributive is used in this problem
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Solve -7x^2+x+9=-6x quadratic formula
myrzilka [38]

Answer:

-7x^2+x+9=-6x

-7x^2+x+9+6x=-6x+6x

-7x^2+7x+9=0

quadratic\: formula

x_{1,\:2}=\frac{-7\pm \sqrt{7^2-4\left(-7\right)\cdot \:9}}{2\left(-7\right)}

\sqrt{-7^{2} -4(-7)\times9} =\sqrt{301}

x_{1,\:2}=\frac{-7\pm \sqrt{301}}{2\left(-7\right)}

\frac{-7+\sqrt{301}}{2\left(-7\right)}

=\frac{-7+\sqrt{301}}{-2\cdot \:7}

=\frac{-7+\sqrt{301}}{-14}

\frac{-7-\sqrt{301}}{2\left(-7\right)}

=\frac{-7-\sqrt{301}}{-2\cdot \:7}

=\frac{-7-\sqrt{301}}{-14}

answer=\frac{7+\sqrt{301}}{14}

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3 years ago
(4+2n^3) + (5n^3+2)
pychu [463]
You just have to combine like terms here
6+7n^3 is the final answer

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3 years ago
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1.6E-8 is equal to what numbers or scientific notation?
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Last year a state university received 3,560 applications from boys,of those applications,35%were from boys who lived in other st
Aleksandr [31]
\frac{3560}{x} = \frac{40}{100}40x=356000 x= 8900 applications 

you make x the number of total applications   
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3 years ago
HELP ME , I CANNOT POST PICTURE & I HAVE 2 THINGS THAT REQIRE A PICTURE WHAT DO I DO ??!
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Answer:

Step-by-step explanation:

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3 years ago
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