I got 11.6 for the perimeter
I don't get it! Do I have to do the triangles first with pythagorean theorem?
Morning
For every 142 people, 12 are going to A
How many 142's are there in 1704? 1704/142 = 12 sets
so 12sets x 12 people/set = 144 people going to see A
A rotating water sprinkler makes one revolution every 15 s. The water reaches a distance of 5 m from the sprinkler.
The graph of \(\huge{r = \dfrac{7}{3 \cos \theta + 2 \sin \theta}}\) is a line. Find the slope of this line.
\(\begin{array}{|rcll|} \hline \mathbf{r(\theta)} &\mathbf{=}& \mathbf{\dfrac{7}{3 \cos \theta + 2 \sin \theta}} \\ \hline r(0) &=& \dfrac{7}{3 \cos(0) + 2 \sin(0)} \\\\ r(0) &=& \dfrac{7}{3} \\ \hline r(90) &=& \dfrac{7}{3 \cos(90) + 2 \sin(90)} \\\\ r(90) &=& \dfrac{7}{2} \\ \hline -m &=& \dfrac{r(90)}{r(0)} \\\\ &=& \dfrac{\dfrac{7}{2}}{ \dfrac{7}{3}} \\\\ -m &=& \dfrac{3}{2} \\\\ \mathbf{m} & \mathbf{=} & \mathbf{-\dfrac{3}{2}} \\ \hline \end{array}\)
