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Lina20 [59]
3 years ago
9

What is 7x+3x+8x=180

Mathematics
1 answer:
Anna35 [415]3 years ago
3 0

Answer:

x = 10

Step-by-step explanation:

7x + 3x + 8x = 180

Simplify:

18x = 180

Divide both sides by 18:

x = 10

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He will eventually make enough money to buy his car

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2 years ago
What is 4 times 5 times 10
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200

Step-by-step explanation:

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Have a wonderful day!

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If f(x)=2−x12 and g(x)=x2−9, what is the domain of g(x)÷f(x)?
Keith_Richards [23]
\bf \begin{cases}
f(x)=2-x^{12}\\
g(x)=x^2-9\\
g(x)\div f(x)=\frac{g(x)}{f(x)}
\end{cases}\implies \cfrac{x^2-9}{2-x^{12}}

now, for a rational expression, the domain, or "values that x can safely take", applies to the denominator NOT becoming 0, because if the denominator is 0, then the rational turns to undefined.

now, what value of "x" makes this denominator turn to 0, let's check by setting it to 0 then.

\bf 2-x^{12}=0\implies 2=x^{12}\implies \pm\sqrt[12]{2}=x\\\\
-------------------------------\\\\
\cfrac{x^2-9}{2-x^{12}}\qquad \boxed{x=\pm \sqrt[12]{2}}\qquad \cfrac{x^2-9}{2-(\pm\sqrt[12]{2})^{12}}\implies \cfrac{x^2-9}{2-\boxed{2}}\implies \stackrel{und efined}{\cfrac{x^2-9}{0}}

so, the domain is all real numbers EXCEPT that one.
4 0
3 years ago
The value of a particular stock is increasing at a rate of 7% every month.
viva [34]

Answer:

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