-15+7=-8
Adding numbers with different signs makes it subtraction and the answer will have the sign of the bigger number
        
             
        
        
        
5,280 feet per mile
10 miles
5,280x10= 52,800
        
             
        
        
        
Answer:
x=27.8
Step-by-step explanation:
first, you need to find y. 2y-5=65. 65+5 is 60 and you are left with 2y=70. to get the 2 off of the y you divide everything by 2. 70/2 is 35 therefor y=35. Now you plug that into the other equation (2x+y) and get 2x+35 which is equal to segment 90.6 so 2x+35=90.6. subtract 35 on both sides and you have 2x=55.6. To get the 2 off the x, we divide everything by 2. all of that divided by 2 is x=27.8 
 
        
             
        
        
        
<span><span>29, 31, 33, & 25. Those are all odd and if added up equal 128
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