Step-by-step explanation:
let 
(-7,-8) =(x1, y1) 
and (-6,7)=(x2, y2)
by the formula 
d=√(y2-y1) ²+(x2-x1) ²
 =√(7+8)²+(-6+7)²
 =√15²+1²
 = √225+1
= √226
 
 
        
             
        
        
        
Answer:
HCF (HIGHEST COMMON FACTOR) OR GCF ( GREATEST COMMON FACTOR) OF 40 AND 60 IS 20.
 
        
             
        
        
        
Answer:
Ans; Base=19.799cm
each of the other two sides=14cm
Step-by-step explanation:
two isosceles triangles are going to give you a square. So that means the area of the square will be 2(98cm^2) cos u added two of the triangles.There fore to get each side of the square, find  the square root of the area of the square.you will get 14cm.that is equal to the length of the other two sides of the triangle. the base of the triangle is equal to the diagonals of the square(d=s√2).Use that to find the base of the triangle. Hope this helps.I am not good at explaining though
 
        
             
        
        
        
It's C x5 the correct answer I'm not sure
        
             
        
        
        
Answer:
c
Step-by-step explanation: