C. 44 is the answer 4(4+8)-4=44
Hello!
If we have 7 more, we are adding. As you can see, we add 7 more to n in C.
Therefore, our answer is C) n+7.
I hope this helps!
<YWX=30°; YX=80÷2=40
WX²+40²=80²
WX²=6,400-1,600
WX=√4,800=√(4×4×4×25×3)=40√3
Answer:

Step-by-step explanation:
(1) A typical form of equation of a line is:

with,
is slope and
is y-intercept.
(2) Another straight line has equation in form of:

with
is slope and
is y-intercept
(3) If these two lines are perpendicular, according to the property of two perpendicular lines on the two-dimensional plane, we have:
x
= -1
(4) Transform the given equation of original line into typical form:

<=> 
<=> 
<=> 
=> 
=> 
=> Option D:
is correct (Slope =
)
Hope this helps!
:)