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3 years ago

Last time. (fifty each) F ree p oints! Jess is signing out, but want to make everyone's day. Have a great day!

Mathematics

2 answers:

Svetllana [295]3 years ago

6 0

Answer:

Umm.. thanks so much

Step-by-step explanation:

gulaghasi [49]3 years ago

6 0

Answer:

well then

Step-by-step explanation:

i shall take these points with gratitude.

i thank you with the power of god and anime

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A cone has radius 9 and height 12. A frustum of this cone has height 4.

Rom4ik [11]

The radii of the frustrum bases is 12

Step-by-step explanation:

In the figure attached below, ABC represents the cone cross-section while the BCDE represents frustum cross-section

As given in the figure radius and height of the cone are 9 and 12 respectively

Similarly, the height of the frustum is 4

Hence the height of the complete cone= 4+12= 16 (height of frustum+ height of cone)

We can see that ΔABC is similar to ΔADE

Using the similarity theorem

AC/AE=BC/DE

Substituting the values

12/16=9/DE

∴ DE= 16*9/12= 12

Hence the radii of the frustum is 12

3 0

3 years ago

A clinical trial was conducted to test the effectiveness of a drug for treating insomnia and older subjects before treatment 14

RideAnS [48]

Answer:

99% confidence interval estimate of the mean weight time for a population with drug treatments

(79.11 , 112.69)

Step-by-step explanation:

Step(i):-

Given data mean of the Population = 104 minutes

Given sample size 'n' =14

Mean of the sample(x⁻) = 95.9 minutes

Given Standard deviation = 24.4 minutes

Step(ii):-

99% confidence interval estimate of the mean weight time for a population is determined by

$(x^{-} - Z_{0.01} \frac{S.D}{\sqrt{n} } , x^{-} +Z_{0.01} \frac{S.D}{\sqrt{n} })$

$(95.9 - 2.576\frac{24.4}{\sqrt{14} } , 95.9+2.576\frac{24.4}{\sqrt{14} })$

On calculation , we get

(95.9 -16.79 , 95.9 +16.79)

(79.11 , 112.69)

Conclusion:-

99% confidence interval estimate of the mean weight time for a population with drug treatments

(79.11 , 112.69)

7 0

3 years ago

Can somebody please help me with this!! i don’t want to fail!!!

lbvjy [14]

Answer:

im pretty sure its B. two planes

Step-by-step explanation:

6 0

3 years ago

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Convert 360°F to °C, rounded off to the nearest 10°C.

creativ13 [48]

Answer:

360 Fahrenheit is equal to 182.222 Celcius, round it to 182

Step-by-step explanation:

7 0

3 years ago

Help me with this please

zvonat [6]

Answer: (6,4)

10 + 2 / 2 = 6

-1 + (-7) / 2 = -4

3 0

3 years ago

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