If the 3 numbers are in the ratio of 1:3:5, then all together,
they make (1 + 3 + 5) = 9 parts.
Since 72 has been split up into 9 parts, each part is (72 / 9) = 8 .
So the numbers are
1 part . . . . 1 x 8 = <em>8</em>
3 parts . . . 3 x 8 = <em>24</em>
5 parts . . . 5 x 8 = <em>40</em>
<u>Check:</u>
8 / 8 = 1
24/8 = 3
40/8 = 5
8 + 24 + 40 = 72 yay !
and a shout-out to Silversoul, who has so graciously
given me so many chances to fix my typos.
Answer:
This is for sure B. Non-proportional
Step-by-step explanation:
The numbers on the left side go down every time, the way you can tell instantly that this is non-linear and hence non-proportional is because the numbers on the left start, then go down, then go up,
May I have brainliest please? :)
Answer:
A region R is revolved about the y-axis. The volume of the resulting solid could (in principle) be found using the disk/washer method and integrating with respect to y or using the shell method and integrating with respect to x.
Step-by-step explanation:
We assume this question :
Fill in the blanks: A region R is revolved about the y-axis. The volume of the resulting solid could (in principle) be found using the disk/washer method and integrating with respect to _ or using the shell method and integrating with respect to _____.
We can calculate the volume of a region when revolved about y-axis with two common methods: washer method and shell method. We need to take in count, that the general formula for these methods are different respect to the variable used to calculate the volume.
Since the region R is revolved about y-axis, disk/washer method needs to calculate the integral respect to y, and by the other hand the shell method will calculate the integral respect to x.
Washer method
![V\approx \sum_{k=1}^n \pi r^2 h = \sum_{k=1}^n \pi f(y_k)^2 dy](https://tex.z-dn.net/?f=V%5Capprox%20%5Csum_%7Bk%3D1%7D%5En%20%5Cpi%20r%5E2%20h%20%3D%20%5Csum_%7Bk%3D1%7D%5En%20%5Cpi%20f%28y_k%29%5E2%20dy)
![V= \pi \int_{c}^d f(y)^2 dy](https://tex.z-dn.net/?f=V%3D%20%5Cpi%20%5Cint_%7Bc%7D%5Ed%20f%28y%29%5E2%20dy)
Shell method
![V = \lim_{n\to\infty} 2\pi x_i f(x_i)\Delta x =\int_{a}^b 2\pi x f(x) dx](https://tex.z-dn.net/?f=V%20%3D%20%5Clim_%7Bn%5Cto%5Cinfty%7D%202%5Cpi%20x_i%20f%28x_i%29%5CDelta%20x%20%3D%5Cint_%7Ba%7D%5Eb%202%5Cpi%20x%20f%28x%29%20dx)
So then the correct answer would be:
A region R is revolved about the y-axis. The volume of the resulting solid could (in principle) be found using the disk/washer method and integrating with respect to y or using the shell method and integrating with respect to x.
Answer:
b
Step-by-step explanation: