Answer:
20: 9t+12
21: 18x
22: 105x+9
24: 156r
25: 3x+11
26: 25.2x
28: 56a
29: 1.5n
30: 13q
Step-by-step explanation:
hope this helped 
brainliest please
 
        
             
        
        
        
I would say 43 because 43 has 3 ones (that’s what makes the 3) and it’s less than 52 and greater than 50.
Answer: 43
        
             
        
        
        
The answer is 65
there are 10 millimeters in every centimeter...so to get the size of the grid, you multiply 260 x 10 to get 260 centimeters and then to see how many millimeters are in the 260 centimeter grid you multiply it by 260 by 10, which gives you 2,600 millimeters, so then all that is left to do is divide 2,600 millimeters by 40 millimeters for each of her 40 millimeter equilateral triangles to see how many will fit...the answer is 65  <span />
        
             
        
        
        
Answer:
See explanation
Step-by-step explanation:
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Answer:
10
Step-by-step explanation: