Is talking sound energy

Mathematics

1 answer:

kupik [55]3 years ago

3 0

Answer:yes

Step-by-step explanation:

It Is being ur using energy to talk Too talk to people because when u talk a lot u have to breathe more so u basically need energy Andy oxygen to talk

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3 years ago

Who is lionel messi

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He is a soccer player

Step-by-step explanation:

Lionel Andrés Messi is an Argentine professional footballer who plays as a forward and captains both Spanish club Barcelona and the Argentina national team.

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In an inductive generalization, in order to achieve an error margin of plus or minus 3 percentage points at a confidence level o

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Let n = required random sample size.

Assume that the population standard deviation is known as σ.
Let m = sample mean.
At the 95% confidence level, the expected range is
(m - k(σ/√n), m + k(σ/√n))
where k = 1.96.

Therefore the error margin is 1.96(σ/√n).
Because the error margin is specified as 3% or 0.03, therefore
(1.96σ)/√n = 0.03
√n = (1.96σ)/0.03
n = 128.05σ²

This means that the sample size is about 128 times the population variance.

Answer:
Smallest sample size = 128.05σ², where σ = population standard deviation.

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3 years ago

Harold wrote this equation to model the level of water in a pool over time. The variable x represents time in hours. f(x) = 3,50

lina2011 [118]

Answer:

The water level is falling.

The initial level of water in the pool was 3,500 units

The water was 2,600 units high after 4 hours.

Step-by-step explanation:

The given function that models the water level is

$f(x)=3,500-225x$