paigesyring

08.12.2021 • 

Mathematics

The US average life expectancy at birth is 79.1 years. The National Sleep Foundation guidelines recommend that adults (age 18 and up) should get 7.5 hours of sleep per night.
a) Assuming there are 365.25 days in one year, how many minutes of sleep does the person of
average life expectancy get during their adult years?
b) How many hours is this person awake during their adult years?

Ответ:

allysoftball6226

08.12.2021

Mathematics

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It depends on how many years a person lives.

Step-by-step explanation:

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Ответ:

JANA279

23.05.2020

Mathematics

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Calculate Δ = b^2 -4ac => Δ = 169 => k1 = 3/2; k2 = -5 => 2k^2 + 7k - 15 = 2*(k -3/2)(k+5) = (2k - 3)(k+5);

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