Answer:
120km 
Step-by-step explanation:
10km in 15 min
3hrs = 3 x 60 min = 180 min
180min divided by 15min = 12
12 x 10km = 120 km
 
        
                    
             
        
        
        
Answer:
50%
Step-by-step explanation:
 
        
             
        
        
        
Answer:
you will get more money if he gives you 1 cent per day then doubles it
Step-by-step explanation:
if your brother gives you 25 cents per day, at the end of 10 days you will have $2.50
if he gives you 1 cent per day then doubles it, this will be your daily earnings:
day 1- 0.01
day 2- 0.02
day 3-  0.04
day 4- 0.08
day 5- 0.16
day 6- 0.32
day 7- 0.64
day 8- 1.28
day 9- 2.56
day 10- 5.12
then when you add all of this up, you would recieve 10.23 cents at the end of day 10
 
        
             
        
        
        
Answer:
you use older of operations to solve this
 
        
                    
             
        
        
        
Answer:
55°
Step-by-step explanation:
if the middle is straight, then x+35°=90°