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3 years ago

Express 15.68 trillion in scientific notation.

Mathematics

1 answer:

hram777 [196]3 years ago

5 0

Answer: one billion 1,000,000,000 1 x 109

ten billion 10,000,000,000 1 x 1010

one hundred billion 100,000,000,000 1 x 1011

one trillion 1,000,000,000,000 1 x 1012

Step-by-step explanation:

So sorry if this did not help!

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Answer:

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Step-by-step explanation:

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Now, find the margin of error M as such

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In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

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We need to sample at least n parents.

n is found when $M = 4, \sigma = 79.5$ . So

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$4 = 1.645*\frac{79.5}{\sqrt{n}}$

$4\sqrt{n} = 1.645*79.5$

$\sqrt{n} = \frac{1.645*79.5}{4}$

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$n = 1068.92$

Rounding up

We need to sample at least 1069 parents.

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

72% of 350 =

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