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Amanda [17]
3 years ago
12

Pls explain your work!

Mathematics
1 answer:
mylen [45]3 years ago
6 0

Answer:

find total volume to find what amount is 20%

hack, is put the 20% in alreadyy to find 20% volume

20%=1/5

so

vcone=1/3(hpir^2)

times thath by 1/5

vcone=1/15(hpir^2)

d/2=r

given

4.8=d

4.8/2=d/2=r=2.4

10=h

V=1/15(10pi2.4^2)

V=1/15(10pi5.76)

V=1/15(57.6pi)

V=3.84pi

V=12.0637 cubic inches=20% of vase

0.5 cubc inches per min

0.5 times t=12.0637

divide both sides by 0.5

t=24.1237

about 24 minutes

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

The number of samples given is 15,this less than 30, hence, we use the t score confidence Interval

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We find the degrees of freedom = n - 1

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Using the T score table

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= 1.8875

Hence:

Confidence Interval =

= 8.56 ± 1.8875 × 0.09/√15

= 8.56 ± 0.0454010035

Confidence Interval

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8.56 + 0.0454010035

= 8.6054010035

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92% Confidence Interval = [8.515, 8.605]

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