Answer:
18
Step-by-step explanation:
-2(3x+4)+7x=10
-6x-8+7x=10
x=10+8
x=18
 
        
             
        
        
        
Answer: 15 times 12 i think maybe so 180
Step-by-step explanation:
 
        
                    
             
        
        
        
40%
The probability of her getting a red marble is the number of red marbles divided by the number of total marbles. Since she picked a green marble first, we must subtract one marble from the total number of marbles, so that the total # of marbles is 6 + 6 + 4 = 16 - 1 (green marble) = 15. Since there are 6 red marbles, our probability is 6/15 or 2/5. Converted to percentage form, this is 0.4 —> 40%
        
             
        
        
        
Answer:
49 seconds
Step-by-step explanation:
The time perry used is 7/8 of a minute 
a minute equals to 60 seconds
 so the time perry used is 7/8 x 60 = 52.5 seconds
The winner used 14/15 of 52.5 seconds (perrys time)
so 14/15 x 52.5 = 49 seconds