Find delta y/delta x
(10-7)/(15-12)=3/3=1, (15-10)/(20-15)=5/5=1
y=x+b, using any point, I'll use (20,15) we can solve for b...
15=20+b
b=-5 so our line is:
y=x-5, and we want to know when y=17
17=x-5
x=22
so n=22
Carbon is Carbon so it's just one atom.
Air is mostly O2, N2, H2O and ....
Salt is NaCl and not one atom ;)
Answer:
n+p=4.50
n=2p
2p+p=4.5
2p=4.5
p=$1.5
n=$3
Step-by-step explanation:
Answer: V = ![\frac{64}{3}\pi](https://tex.z-dn.net/?f=%5Cfrac%7B64%7D%7B3%7D%5Cpi)
Step-by-step explanation: A solid formed by revolving the region about the x-axis can be considered to have a thin vertical strip with thickness Δx and height y = f(x). The strip creates a circular disk with volume:
V =
Δx
Using the <u>Disc</u> <u>Method</u>, it is possible to calculate all the volume of these strips, giving the volume of the revolved solid:
V = ![\int\limits^a_b {\pi. y^{2} } \, dx](https://tex.z-dn.net/?f=%5Cint%5Climits%5Ea_b%20%7B%5Cpi.%20y%5E%7B2%7D%20%7D%20%5C%2C%20dx)
Then, for the region generated by y = - x + 4:
V = ![\int\limits^4_0 {\pi.(-x+4)^{2} } \, dx](https://tex.z-dn.net/?f=%5Cint%5Climits%5E4_0%20%7B%5Cpi.%28-x%2B4%29%5E%7B2%7D%20%7D%20%5C%2C%20dx)
V = ![\pi.\int\limits^4_0 {(x^{2}-8x+16)} \, dx](https://tex.z-dn.net/?f=%5Cpi.%5Cint%5Climits%5E4_0%20%7B%28x%5E%7B2%7D-8x%2B16%29%7D%20%5C%2C%20dx)
V = ![\pi.(\frac{x^{3}}{3}-4x^{2}+16x )](https://tex.z-dn.net/?f=%5Cpi.%28%5Cfrac%7Bx%5E%7B3%7D%7D%7B3%7D-4x%5E%7B2%7D%2B16x%20%29)
V = ![\pi.(\frac{4^{3}}{3}-4.4^{2}+16.4 - 0 )](https://tex.z-dn.net/?f=%5Cpi.%28%5Cfrac%7B4%5E%7B3%7D%7D%7B3%7D-4.4%5E%7B2%7D%2B16.4%20-%200%20%29)
V = ![\frac{64}{3}.\pi](https://tex.z-dn.net/?f=%5Cfrac%7B64%7D%7B3%7D.%5Cpi)
The volume of the revolved region is V =
Answer:
3,8,15
Step-by-step explanation: