Perimeter of square = 4s perimiter of pentagon= 5s, i guess? its a regular one afterall 4s = P 4 (10) = p 40 = P (40 = 5s)/ 5 8 = s
Sorry I dont know how to answer the second one...
        
                    
             
        
        
        
 18$-8$book=20pencils that were 10$. 
and Brian had 80 cards work: 80÷2= 40+10 new cards=50 cards
 
        
                    
             
        
        
        
9514 1404 393
Answer:
   (c)  Not parallel: corresponding angles are not congruent
Step-by-step explanation:
The two angles shows are both "east" of the respective points of intersection, so are "corresponding" angles. If (and only if) lines r and s are parallel, corresponding angles are congruent. These angles have different measures, so lines r and s are not parallel.
 
        
             
        
        
        
Answer:
880 oz= 55 lb
Step-by-step explanation:
have a good day
 
        
             
        
        
        
How many males and how many females would there be if the total enrollment is 15000?
Ratio is 
  90 males      15000 - x
  ------------- = ---------------
   125 fem              x
Then 90x = 1875000 - 125x, or 215x = 1875000
                                                      x = approx 8720 females
                       and 15000-8720, or 6279 males
If every male finds a dance partner, that would leave (8720-6279) females, or 2440, without dance partners.  ;(
Check:  is the male:female ratio near 90:125?
Is 6279:8720 approx equal to 90:125?
Yes.  0.72 (approx) = 0.72 (approx).