Answer:
C: 15.9cm
Step-by-step explanation:
d= circumference/π
= 50/3.14
=15.9 cm
 
        
                    
             
        
        
        
Answer:
1 < x < 7.5
Step-by-step explanation:
This problem can be solved using given below property of triangle.
Sum of two sides is always greater than third side of triangle.
Difference of two sides is always lesser than third side of triangle.
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Given
sides length 
6.5 units
3.5 units
Third side is 2.5 +  x
using the property, Sum of two sides is always greater than third side of triangle.
6.5 + 3.5 > 2.5 +x 
=>10 >2.5 + x
=>2.5 + x< 10
=> x< 10 -2.5
=> x < 7.5
using the property, Difference of two sides is always lesser than third side of triangle.
6.5 - 3.5 >  2.5 +x 
=>3.5 >  2.5 +x 
=> 2.5 +x  > 3.5
=> x  > 3.5 - 2.5
=> x  > 1
combining both we have
1 < x < 7.5
 
out of the given option none is 1 < x < 7.5
hence, correct answer will be 1 < x < 7.5 and wrong option can be claimed by student.
 
        
                    
             
        
        
        
Step-by-step explanation:
Let x be the number of designer T shirts.
To break even,
Total Cost = Total Sales
Fixed Cost + Variable Cost = Total Sales
given the promotional advertising is classified under fixed cost,

 
        
             
        
        
        
So the train is pulling about 50 cars in total, and there's about 30 boxes of freight in each car.
30 x 50 = 1500
The best estimate would be near 1500 boxes of freight through the whole train.