Which is the value of this expression when a = negative 2 and b = negative 3?

Mathematics

2 answers:

Rina8888 [55]3 years ago

8 0

D) 729/64

I just took the test on edge

vazorg [7]3 years ago

5 0

Can you show the expression so i can solve?

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A: is -10 B: is 200 c: is -3

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Vadim26 [7]

$\bf h=-15cos\left( \frac{2\pi }{5}t \right)\qquad \boxed{h=8}\qquad 8=-15cos\left( \frac{2\pi }{5}t \right)
\\\\\\
\cfrac{8}{-15}=cos\left( \frac{2\pi }{5}t \right)\implies cos^{-1}\left( \frac{8}{-15}\right)=cos^{-1}\left[ cos\left( \frac{2\pi }{5}t \right) \right]
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cos^{-1}\left( \frac{8}{-15}\right)=\cfrac{2\pi }{5}t\implies \cfrac{5}{2\pi }\cdot cos^{-1}\left( \frac{8}{-15}\right)=t\\\\
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$\bf cos^{-1}\left( \frac{8}{-15}\right)=\stackrel{radians}{\stackrel{II~quadrant}{\approx 2.13}~~,~~\stackrel{III~quadrant}{\approx 4.15}}\qquad \qquad 
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\begin{cases}
\frac{5}{2\pi }\cdot 2.13\\\\
\frac{5}{2\pi }\cdot 4.15
\end{cases}$

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The degree of polynomial 5x-7 is

jolli1 [7]

Hello!

The degree would be one because the x in this particular equation doesn’t have an exponent, so you assume that the exponent is one because 5x to the first power is equal to 5x.

I hope this helps!

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The answer is B. Would you like an explanation why?

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