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Lesechka [4]
1 year ago
12

I need help with question 18.This is a homework question!

Mathematics
1 answer:
EastWind [94]1 year ago
7 0

The expression is,

7y+11=-17

let us solve the expression.

\begin{gathered} 7y+11=-17 \\ 7y=-17-11 \\ 7y=-28 \\ y=-\frac{28}{7} \\ y=-4 \end{gathered}

the answer is

7y+11=-17,y=-4

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6 0
3 years ago
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3 years ago
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PLEASE HELP (100 POINTS)
Artyom0805 [142]

\\ \rm\Rrightarrow f(x)=-5cos\dfrac{x}{2}+5

Compare to standard equation of SHM

\\ \rm\Rrightarrow y=Acos(\omega x+\phi)

Here

  • Amplitude=A=-5

\\ \rm\Rrightarrow \omega x=\dfrac{x}{2}

\\ \rm\Rrightarrow \omega=1/2

Well the above one are for extra knowledge .

Solution:-

\\ \rm\Rrightarrow 10=-5cos\dfrac{x}{2}+5

\\ \rm\Rrightarrow 10-5=-5cos\dfrac{x}{2}

\\ \rm\Rrightarrow 5=-5cos\dfrac{x}{2}

\\ \rm\Rrightarrow cos\dfrac{x}{2}=-1

\\ \rm\Rrightarrow \dfrac{x}{2}=cos^{-1}(-1)

\\ \rm\Rrightarrow \dfrac{x}{2}=\pi

\\ \rm\Rrightarrow x=2\pi

So.

\\ \rm\Rrightarrow x=2\pi+2\pi n

3 0
3 years ago
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