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No. 
Half of 48 would be 24, not 21 
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2.6 x 6 = $15.6 . That’s the answer I’m pretty sure! Goodluck!
        
             
        
        
        
Answer:
the answer is C. x<3 x<1 that is the answer
 
        
             
        
        
        
Answer: b = 69
The slashes mean the opposite angles are the same. This is and isosceles triangle, which mean two sides are the same and one is not. 
A triangle = 180
We know one angle is 42 and the other two angles are the same.
Subtract 42 from 180
180 - 42 = 138
Now the 138 is going to two sides but we know they are equal so we can divide 138 by 2
138 divided by 2 = 69
So b = 69