Answer:
try the second one sorry if its wrong report me if it is 
Step-by-step explanation:
hope this help 
 
        
             
        
        
        
9514 1404 393
Answer:
   2
Step-by-step explanation:
Solving the given equation for y, you have ...
   2x +4y = -64
   4y = -2x -64
   y = -1/2x -16
The coefficient of x is the slope of the given line: -1/2. The slope of the perpendicular line is the opposite reciprocal of this:
   -1/(-1/2) = 2
The slope of the perpendicular line is 2.
 
        
             
        
        
        
Step-by-step explanation:
cot x + 2 tan x + tan³ x
Write in terms of sine and cosine:
(cos x / sin x) + 2 (sin x / cos x) + (sin³ x / cos³ x)
Find the common denominator:
(cos⁴ x / (sin x cos³ x) + 2 (sin² x cos² x / (sin x cos³ x)) + (sin⁴ x / (sin x cos³ x))
Add:
(cos⁴ x + 2 sin² x cos² x + sin⁴ x) / (sin x cos³ x)
Factor:
(sin² x + cos² x)² / (sin x cos³ x)
Pythagorean identity:
1 / (sin x cos³ x)
Multiply top and bottom by cos x:
cos x / (sin x cos⁴ x)
Simplify:
cot x sec⁴ x
 
        
             
        
        
        
Using the slope intercept formula, we can see that the slope of line p is 3/5.Since line j is perpendicular to line p it must have a slope that is the negative reciprocal(-5/3).Using the formula we can find the answer.j:y-1=-5/3(x-5)
Doing some math we get:5x+3y=28
        
             
        
        
        
This question has this set of answer choices:
a) when the plane cuts three faces of the cube, separating one corner from the others 
b) when the plane passes through a pair of vertices that do not share a common face
c) when the plane is perpendicular to the base and intersects two adjacent vertical faces
d) when the plane makes an acute angle to the base and intersects three vertical faces
e) not enough information to answer the question
The right answer is the first choice: a) when the plane cuts three faces of the cube, separating one corner from the others 
You can see a picture of this case in the figure attached: as you can see the cross section (in pink) is a triangle.