Answer:
❝ D. 13 feet ❞
Step-by-step explanation:
Here,
- Window is in the rectangular shape.
- Measure of its one diagonal is 13 feet.
According to the properties of rectangle,
→ Diagonals of a rectangle are equal.
So, here the length of other diagonal will be 13 feet too.
 
        
             
        
        
        
Answer:
the ansewr is 
Step-by-step explanation:
c
 
        
                    
             
        
        
        
Answer:
a) 
b)
Step-by-step explanation:
We can write the equation of a line in 3 different forms including slope intercept, point-slope, and standard depending on the information we have. We have a point given and a slope from the equation. We will chose point-slope since we have a point and can find the slope. 
Point slope:
a)  in our new equation because it is perpendicular to it. This means we will need to change it into its negative reciprocal which is
 in our new equation because it is perpendicular to it. This means we will need to change it into its negative reciprocal which is  .
.
We will substitute  and
 and  .
.

This simplifies to:

b) The equation y=3x+4 follows y=mx+b. For the perpendicular line,  . We will need to change it into its negative reciprocal which is
. We will need to change it into its negative reciprocal which is  .
.
We will substitute  and
 and  .
.
