Answer:
Angle 1 = 38 and angle 4 = 142 degrees.
 
        
                    
             
        
        
        
The angle of impact is 30°
<h3>What is the angle of impact?</h3>
In a bloodstain, the angle of impact can be used to determine the appearance of the resulting bloodstain if the bloodstain has a tail or pattern.
- Bloodstain pattern analysis is the study of bloodstains at a scene of the crime in an attempt to reconstruct the events that resulted in the bloodshed.
Mathematically;



Learn more about the angle of impact here:
brainly.com/question/19423063
 
        
             
        
        
        
Answer:
if that statement is true, then DE=ST, and ST=4 so your answer should be <u>DE=4</u>
Explanation:
you can tell that they are even from looking at the first statement, it states <u>DE</u>F=<u>ST</u>U, emphasizing on the DE=ST part, it gives your the answer right there because ST=4
 
        
                    
             
        
        
        
Answer:
Area of the new rectangle  = 148.8 cm square
Step-by-step explanation:
Let x be the dimensions of the rectangle then the
Perimeter of the Original rectangle= 2(L+B)
                                                    = 2 ( 3x+2x) = 2(5x)= 10xcm
If the length is increased by eight the new length would be 3x+ 8
and width would be 2x+x= 3x after 50 % increase
Perimeter of the new rectangle= 2(L+B)
                                                      = 2 ( 3x+8 +3x)
                                                        = 2 (6x+8)
                                                        = 12x + 16
Ratio of the new perimeter to the original perimeter is 
              New perimeter :   Original perimeter
                 8                      : 5
            12x+ 16                   : 10x cm
80x= 60x + 16
20x= 16
x= 16/20= 4/5
 Putting the value of length and breadth in place of x
Area of the new rectangle = L*B =  3 * (4/5) +8 *3(4/5)= 
                                                                  = 12+ 40/5 * 12/5
                                                                    = 62/5* 12/5
                                                                      = 744/5
                                                                    = 148.8 cm square
 
        
             
        
        
        
Answer:
all work is shown and pictured