plz help If A=(2,1), B=(1,2), C=(3,1) Find the angle ABC using scalar products

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Ответ:

kacr7292

27.01.2021

Mathematics

z-score = 0.741

Step-by-step explanation:

The provided information are:

Population mean $(\mu)$ = 103

Population standard deviation $(\sigma)$ = 2.7

Score (X) = 105

The formula to calculate the z-score is:

$z=\frac{X-\mu}{\sigma}$

The z- score can be calculated as:

$z=\frac{X-\mu}{\sigma}\\z=\frac{105-103}{2.7} \\z= 0.741$

Hence, the z-score is 0.741.

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plz help If A=(2,1), B=(1,2), C=(3,1) Find the angle ABC using scalar products​