Mathematics: The overnight temperature in Polokwane drops from 11 °C to -2 °C y how many degrees has the temperature dropped?

The overnight temperature in Polokwane drops from

Ответ:

loves2ballet

03.04.2021

Mathematics

ur answer is 13⁰

Step-by-step explanation:

hope it helps

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Ответ:

bob7220

23.04.2023

Mathematics

B. See explanation

Step-by-step explanation:

Use the distance formula between two points (x_1,y_1) and (x_2,y_2):

$d=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$

Find the lengths of all sides of quadrilateral DEFG:

$DE=\sqrt{(-a-b-0)^2+(c-2c)^2}=\sqrt{(a+b)^2+c^2}\\ \\EF=\sqrt{(a+-b-0)^2+(c-2c)^2}=\sqrt{(a+b)^2+c^2}\\ \\FG=\sqrt{(a+b-0)^2+(c-0)^2}=\sqrt{(a+b)^2+c^2}\\ \\GD=\sqrt{(-a-b-0)^2+(c-0)^2}=\sqrt{(a+b)^2+c^2}\\ \\$

All sides are of the same length. Now fond the slopes of all sides:

$DE=\dfrac{2c-c}{0-(-a-b)}=\dfrac{c}{a+b}\\ \\EF=\dfrac{c-2c}{a+b-0}=-\dfrac{c}{a+b}\\ \\FG=\dfrac{c-0}{a+b-0}=\dfrac{c}{a+b}\\ \\GD=\dfrac{c-c}{-a-b-0}=-\dfrac{c}{a+b}\\ \\$

The slopes of the sides DE and FG are the same, so these sides are parallel. The slopes of the sides EF and GD are the same, so these sides are parallel.

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The overnight temperature in Polokwane drops from 11 °C to -2 °C y how many degrees has the temperature dropped?

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