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3 years ago

11

At 11:59 p.m on December 31st the times square ball in new york city was 725 feet above ground one minute later it was 584 feet

above the ground what is the rate of change of the all per second

1 answer:

Nuetrik [128]3 years ago

6 0

Answer:

it dropped -141 in 60 seconds so 141/60 = 2.35 ft per second

Step-by-step explanation:

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2 years ago

what is perpendicular to y= 3x -9 and passes through the point (3,1)

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3 years ago

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3 years ago

Read 2 more answers

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.

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Answer:

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