Answer:
hey i dont really know, but look up calculator soup, it has a ton of different calculators and may be able to help u
Step-by-step explanation:
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Answer:
-11
Step-by-step explanation:
-5 minus 6 equals -11. Look up on Google
 
        
                    
             
        
        
        
Answer:
42% i hope its right if not sorry
Step-by-step explanation:
 
        
             
        
        
        
Answer:11
Step-by-step explanation:
Boys : girls=7:1
Sum of ratio=7+1=8
Let them number of girls be y
Then they number of boys=y+66
Total number of pupils=y+y+66
Total number of pupils=2y+66
Number of girls=(girls ratio)/(sum of ratio) x (total number of pupils) 
y=1/8 x (2y+66)
Cross multiply 
y x 8=2y + 66
8y=2y + 66
Collect like terms 
8y-2y=66
6y=66
Divide both sides by 6
6y/6=66/6
y=11
The number of girls is 11
 
        
             
        
        
        
Answer:
Actual length of wall = 30ft
Step-by-step explanation:
We have scale of a room as 3 inch for 5ft. 
We can write scaling factor as:
Scaling factor = 3 /60     (Since 5ft = 60 inches )
Scaling factor = 1/20
Now, 
a wall in the blueprint is 18inch.
So actual length of wall can be determined by dividing 18 inch by the scale factor.
i.e actual length of wall = 18 / scale factor  = 18 / (1/20)
  actual length of wall = 18* 20 = 360 inch = 30ft (Since 360 inch = 30ft)
Hence Actual length of wall = 30ft