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nadya68 [22]
3 years ago
11

Twice the difference of a number and 2 is 9

Mathematics
1 answer:
likoan [24]3 years ago
6 0
2(n-2)=9
That's the answer. U just set it up as it is written
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Trigonometric Identities and Applications? help
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]
\\\\\\
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\\\\
-------------------------------

\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}
3 0
3 years ago
Macy wants to know if the number of words on a page in her grammar book is generally more than the number of words on a page in
dybincka [34]

yes, because there is a lot of variability in the grammar book data.

6 0
3 years ago
The height of a trapezoid is 26 yards and the bases are 14 and 30 yards. What is the area (in square yards)?
faust18 [17]

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Viefleur [7K]
Q.12

30-18=12
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dybincka [34]

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7 0
3 years ago
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