Answer:
16
Step-by-step explanation:
 
        
             
        
        
        
The answer is choice B. The coordinate point CAN share the same y point but, CANNOT share the same x point
        
             
        
        
        
Answer:
2w+2(2w-7)
Step-by-step explanation:
the first 2w is the length of the two widths, and the (2w-7) is the length of the length, and we multiply by two because there are two sides.
 
        
             
        
        
        
Answer:
A. 2/5, 0.40, 40%
Step-by-step explanation:
To turn a fractions into a decimal divided the numerator by the denominator. 2/5=0.40.
 
        
             
        
        
        
Distance to travel = 20 m.
Let us determine the time, t, that each participant took to complete 20 m.
Barbara:
Average speed = (3 m)/(2 s) = 1.5 m/s
t = 20/1.5 = 13.3 s
Mark:
t =  5 s
Carlos:
y = x + 1
where
y = 20 m
x = time, t
Therefore
t =x = y - 1 = 20 - 1 = 19 s
Summary:
Barbara:  13.3 s
Mark:       5 s
Carlos:     19 s
Answer:
The winner is Mark