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coldgirl [10]
3 years ago
10

What is the surface area of a cylinder with base radius of 3 and height 8?

Mathematics
2 answers:
ehidna [41]3 years ago
7 0

Answer:

it is 72pi proven in khan academy XD

Step-by-step explanation:

Darina [25.2K]3 years ago
5 0

Answer:

66π

Step-by-step explanation:

SA= 2πrh+2πr²

SA= 2π x 3 x8 + 2π x 3x3

= 48π + 18π

=66π

hope this helps!

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Which of these is a set of inputs and outputs for the function f(x) = 2x + 4?
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D

Step-by-step explanation:

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An opinion poll surveyed 900 people and reported that 36% believe a certain governor broke campaign financing laws in his electi
Anuta_ua [19.1K]

Answer:

The confidence Interval = (0.329, 0.391)

Step-by-step explanation:

Formula for the Confidence Interval for proportion =

p ± z × √p(1 - p)/n

where

p = x/n

From the question

n = 900 people

x = 36% of 900 people

= 36/100 × 900

= 324

z = z score of 95% confidence Interval

z = 1.98

p = x/n

= 324/900

= 0.36

Confidence Interval = p ± z × √p(1 - p)/n

= 0.36 ± 1.96 × √0.36 (1 - 0.36)/900

= 0.36 ± 1.96 ×√0.36 (0.64)/900

= 0.36 ± 1.96 × √0.000256

= 0.36 ± 1.96 × 0.016

= 0.36 ± 0.03136

Confidence Interval = 0.36 ± 0.03136

= 0.36 - 0.03136

= 0.32864

Approximately to 3 decimal places = 0.329

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Therefore, the 95% confidence interval for the population proportion of people who believe the governor broke campaign financing laws = (0.329, 0.391)

7 0
3 years ago
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