5.00Answer:
Step-by-step explanation:
 
        
             
        
        
        
Answer:
Question 13: 90, Question 14: y = 
, Question 15: x = 
, Question 16: y = 
.
Step-by-step explanation:
 
        
             
        
        
        
<h3>
Answer:  </h3><h3>
There are 75 coins that aren't nickels. </h3><h3>
One equation you could use is 75+n = 92</h3>
(This solves to n = 17 meaning there are 17 nickels)
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Explanation:
"There are 25 pennies, 21 dimes, and 29 quarters", so there are 25+21+29 = 75 coins so far. This is the amount of coins that aren't nickels. The rest are nickels, which is some amount n. This adds to the 75 to get 75+n. Set this equal to 92 because there are 92 coins in all. That's how we end up with 75+n = 92.
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Extra info
The equation 75+n = 92 is the same as n+75 = 92. Subtract 75 from both sides to isolate n. You should get n = 17 after doing so.
 
        
             
        
        
        
Answer:
1. =
2. <
3. <
Step-by-step explanation:
Note: When comparing decimals you always place both decimals right above each other.
1 is equal to because once you put a 0 behind the 2.1 they are both the same.
2.10
2.1    <add 0 as space holder
2 is less than because they are both negative you are looking for which one is closest to zero.
-4.5   <add 0 as place holder
-4.25   <closest to zero
3 is less than because 
(pie) equals 3.141592654 which is less than 3.2.
3.141   <do not need to add whole decimal
3.2   <add two 0's as a placeholder