-2|x+5| =8
can you plz help me!!

the answer is here

plz mark as brainlist

Step-by-step explanation:

-2x-10=8

-2x=8+10

X= -18/2

hence X= -9

Step-by-step explanation:

First, |x| = x when x >= 0 and |-x| = x when x < 0.

So,there are two ways to solve this equation -2|x + 5| = 8.

In the 1st case, let's assume (x + 5) >= 0

=> |x + 5| = x + 5

=> -2(x + 5) = 8

=> x + 5 = 8 / -2 = -4

=> x = -4 - 5 = -9

In the 2nd case, let's assume (x + 5) < 0

=> |x + 5| = -(x + 5) = -x - 5

=> -2 (-x -5) = 8

=> (-x -5) = -4

=> -x = 1

=> x = -1

These are the 2 solutions by solving the math in two different ways.

I hope this helps.

Let me if you have any more questions.

i believe the answer is d.

hope it you! : d

geometry: triangles

solvers

lessons

answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584