Answer:
Eudora ran for 30 minutes and use the jetpack for 1 hour and 30 minutes
Step-by-step explanation:
Lets call x the time she ran and y the time she was using a jetpack (in hours), we have
12x + 76y = 120
Since it took 2 hours we have that x+y = 2, hence y = 2-x. We can replace y in the equation above, obtaining
12x + 76(2-x) = 120
12x+ 152 - 76x = 120
12x-76x = 120-152
-64x = -32
x = -32/-64 = 1/2 (30 minutes)
As a result
y = 1-1/2 = 3/2 (1 hour, 30 minutes)
She ran for 30 minutes and use the jetpack for 1 hour and 30 minutes.
Answer:
3:1
Step-by-step explanation:
For every 3 woodwinds, there is 1 percussion.
Note:
6:2, 9:3, 12:4 are equivalent to 3:1.
Every time you add 3 to the first value, and 1 to the second value.
90.69 rounded to the nearest tenth is 90.7
I’m pretty sure 2 and 5/7 as an improper fraction is 19 but I’m not sure since on your question it doesn’t show 19 as an answer.
Answer:
total SA = 622.725mm^2
Step-by-step explanation:
we are trying to find the surface area of this structure
we can start by breaking this structure into three pieces.
(surface area of the left hemisphere)+(surface area of the right hemisphere)+(surface area of the right cylinder inbetween those 2 hemispheres)
1. surface area of the hemisphere.
surface area of a hemisphere is 4
d = 8.4mm so r = 4.2mm.
surface area =
we need to take the half of 221.607 since it is half the hemisphere which is 221.670/2 = 110.835mm^2
we have two half hemisphere on the left and right so the tottal surface area of both the half hemisphere is 110.835x2 = 221.670mm^2
2. surface area of the right cylinder.
SA of right cylinder =
So the entire surface area is.
(surface area of both the half hemisphere + surface area of the right cylinder)
221.607+401.118 = 622.725mm^2