In a year, there's a total of 12 months. So if 4 of them have 30 days, then the rest don't: 12 - 4 = 8 months. So 8 months out of 12 don't have 30 days, and 4 out of 12 have 30 days.
So the ratio of the months with 30 days to the months with other than 30 days is 4/8. To simplify your answer, you divide both sides by 2 and you get a ratio of 1/2.
All in all, the ratio is 1/2.
Hope this helps! :)
The point (8,2,9) is in the first octant.
The closest distance from the coordinate planes is the value y=2, which will therefore be the maximum radius of the required sphere.
The standard equation of a sphere with radius r and centre (u,v,w) is given by
(x-u)^2+(y-v)^2+(z-w)^2=r^2
Substituting r=2, u=8, v=2, w=9, we get the equation of the required sphere
(x-8)^2+(y-2)^2+(w-9)^2=2^2
Step-by-step explanation:
Points are (8,5) and (-12,-9)
The equation of a line passing through two points is given by :
or
But he writes the equation 7x – 10y = 3 which is not matching with the one we have calculated. It means that model calculated by Devon is not good.
The answer is D) 12
8x +14=9x+12
8x+12=9x
12=1x
x=12
Answer:
https://youtu.be/wOH_gVtidns
I recorded a video of myself explaining it hope it helps ;)
Step-by-step explanation:
