First we have to isolate the varible

-2/5x-2=18
+2 +2

-2/5x=20

then divide both sides by -2/5 to get x completely by itself

-2/5x=20
------- ---
-2/5 -2/5

x=-50

i hope i've helped!

5 0

3 years ago

Read 2 more answers

Find all polar coordinates of point p where p = (6, -pi/5)

Lelu [443]

Given a point in coordinates form $(r,\theta)$ , one can compute the cartesian form like this:
$(r\cos\theta,r\sin\theta )$
We have:
$r=6,\theta=-\dfrac{\pi}{5}$
We get the cartesian form then:
$\left(6\cos-\dfrac{\pi}{5},6\sin-\dfrac{\pi}{5}\right)$

4 0

3 years ago

I really need help, please explain btw.

Stella [2.4K]

It's short in txt messages used as "by the way"

8 0

3 years ago