This will be found on google.
Check the picture below.
so notice, in a cone the height and radius are always at a ratio of each other in a right-triangle, since the water level, in red, makes a similar triangle with the cone's volume, let's use proportions to get "x".
![\bf \cfrac{21}{7}=\cfrac{x}{3}\implies 3=\cfrac{x}{3}\implies 9=x \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{volume of a cone}}{V=\cfrac{\pi r^2 h}{3}}~~ \begin{cases} r=radius\\ h=height\\ \cline{1-1} r=3\\ h=\stackrel{x}{9} \end{cases}\implies V=\cfrac{\pi (3)^2(9)}{3}\implies \stackrel{V=27\pi }{V\approx 84.823}](https://tex.z-dn.net/?f=%5Cbf%20%5Ccfrac%7B21%7D%7B7%7D%3D%5Ccfrac%7Bx%7D%7B3%7D%5Cimplies%203%3D%5Ccfrac%7Bx%7D%7B3%7D%5Cimplies%209%3Dx%20%5C%5C%5C%5C%5B-0.35em%5D%20~%5Cdotfill%5C%5C%5C%5C%20%5Cstackrel%7B%5Ctextit%7Bvolume%20of%20a%20cone%7D%7D%7BV%3D%5Ccfrac%7B%5Cpi%20r%5E2%20h%7D%7B3%7D%7D~~%20%5Cbegin%7Bcases%7D%20r%3Dradius%5C%5C%20h%3Dheight%5C%5C%20%5Ccline%7B1-1%7D%20r%3D3%5C%5C%20h%3D%5Cstackrel%7Bx%7D%7B9%7D%20%5Cend%7Bcases%7D%5Cimplies%20V%3D%5Ccfrac%7B%5Cpi%20%283%29%5E2%289%29%7D%7B3%7D%5Cimplies%20%5Cstackrel%7BV%3D27%5Cpi%20%7D%7BV%5Capprox%2084.823%7D)
Answer:
y = 1/2 x + 1/2
Step-by-step explanation:
equation of line y - y1 = m (x - x1)
(-3, -1)
y - (-1) = 1/2 * (x - (-3) )
y + 1 = 1/2 (x + 3)
y + 1 = x/2 + 3/2
y = 1/2 x + 3/2 - 1
y = 1/2 x + 1/2
Answer: No.
Step-by-step explanation:
9/54 is equal to 1/6
It is said that 85% of the students liked reading mystery stories. This means the remaining 15% don't like to read these stories. If there are 30 students belonging to the second category, then the number of students who liked reading mystery stories is (30/0.15)*0.85 equal to 170 students out of 200 students.
