The equation
is

Some observations:
is defined only as long as
, or 
- wherever
is defined, its value must be non-negative, so that
is never positive - by the definition of absolute value, we have
if
, and
if
. Then

If
, the equation becomes

Taking the square of both sides gives

but since the discriminant is
, there are no real solutions.
If
, then

Taking squares gives

and solving by the quadratic formula gives two potential solutions,

which have approximate values of 8.49 and 26.51.
We know for any value of
that
. We have
and
, so only the first solution 8.49 is valid.
Answer:
There are two numbers 10 units from zero on the number line. These are 10 and -10.
Step-by-step explanation:
On a number line, if you move a pointer ten units right and left you will land on 10 and -10.
Answer:
k = 7
Step-by-step explanation:
Vertical shift down by 7units, f(x) - 7
g(x) = (0.5)x - 7
g(x) = (0.5)x - k
Comparing both equations, k = 7
Answer:
um 2x dos
Step-by-step explanation: