Mathematics: 2. three times the sum of a number and 7”.

2. three times the sum of a number and 7”.

Ответ:

kayleewoodard

01.02.2022

Mathematics

3 × (x + 7)

three × (a number, commonly x + 7)

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Ответ:

kim3265

06.04.2022

Mathematics

The standard deviation for the combined assignment is 5 minutes.

To combine the standard deviations, we use:

$\sigma_z=\sqrt{(\sigma_x)^2+(\sigma_y)^2}$

With our information, we have:
$\sigma_z=\sqrt{3^2+4^2}
\\
\\=\sqrt{9+16}=\sqrt{25}=5$

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