Mathematics: 2 =1/r-1/r+3 what s the answer?

2\r=1/r-1/r+3 what s the answer? - id21137492111, jimissac68

Ответ:

AM28

01.02.2022

$\frac{2}{r} = \frac{1}{r} -\frac{1}{r}+3\ \ \ and\ \ \ r \neq 0\\\\ \frac{2}{r} =3\ /\cdot r\\\\2=3r\ /:3\\\\ \frac{2}{3} =r$

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Ответ:

landofliam30

01.02.2022

Mathematics

$\frac{2}{r}=\frac{1}{r}-\frac{1}{r+3};\ D:r\neq0\ \wedge\ r\neq-3\\\\\frac{2}{r}-\frac{1}{r}=\frac{-1}{r+3}\\\\\frac{1}{r}=\frac{-1}{r+3}\\\\cross\ multiply\\\\r+3=-r\\\\r+r=-3\\\\2r=-3\\\\\boxed{r=-1.5}$

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Ответ:

cggvbfbvrcf

30.09.2021

Mathematics

Hey there!!

Steps to get into equation which is perpendicular:

Change the slope The slope of a perpendicular line is always negative reciprocal. Take the point and get that into point-slope form. y - y = m ( x - x ) Convert this equation into slope-intercept form.

'm' is the slope.

We have the slope as 1/3

The perpendicular slope would be -3.

Point slope:

The point = (-2,2)

y - 2 = -3( x - (-2) )

y - 2 = -3(x+2)

y - 2 = -3x -6

Adding 2 on both sides:

y = -3x - 4

Hence, the equation would be :

y = -3x - 4

Hope it helps!

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