Answer:
Centimeters might be easier because they can be much more precise than inches when there isn't an ideal length. Kilometers might be easier because it would not require such large numbers to work with. 
Step-by-step explanation:
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Answer:
28
Step-by-step explanation:
Plug in the corresponding numbers to the corresponding variables. Note that: 
m = 7
r = 8
t = 2
mr/t = (7 * 8)/2
(7 * (8/2)) = 7 * 4 = 28
28 is your answer.
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Answer:
the digit 4 in 3.546 is called hundredth because it is after the decimal point you add -th behind it while the digit 4 in 4.23 is called a unit 
 
        
             
        
        
        
Answer:
x = 30 ∠A = 132 degrees
Step-by-step explanation:
Set the equations equal to each other to solve for x
5x - 18 = 3x + 42
-3x        - 3x               Subtract 3x from both sides
2x - 18 = 42
     + 18  + 18              Add 18 to both sides
2x = 60                     Divide both sides by 2
x = 30
Now plug this into the equation for angle A
∠A = 5(30) − 18        Multiply
∠A = 150 - 18           Subtract
∠A = 132 degrees
If this answer is correct, please make me Brainliest!