Answer:
x = 6 ; y = -9
Step-by-step explanation:
8 x + 2 y = 30  ..........equ No 1 
7 x + 2 y = 24......... equ No 2
8 x = 30 - 2y
∴ x =
substituting the value of x in equ No 2
7  + 2 y = 24
 + 2 y = 24
7 ( 30 -2 y) + 2 y × 8 = 24 × 8
7 × 30 - 14 y + 16 y = 192
210 + 2 y = 192
 2 y = 192 - 210
2 y = - 18
∴ y = - 9
put y = -9 , 8 x = 30 - 2 y
         8 x = 30 - 2 ( -9)
     8 x = 30 - ( -18)
   8 x = 48
∴ x = 6
x = 6 ; y = -9
 
        
             
        
        
        
Answer:
All real numbers greater than 0
Step-by-step explanation:
When you look at   y = log (2)  x
Base 2,   exponent y.
x =  2^y
x  can only be a positive number.
 
        
             
        
        
        
9514 1404 393
Answer:
   p = -9 5/9
Step-by-step explanation:
Undo what is done to p.
Multiply by 2.
   p +10 = 4/9
Subtract 10.
   p = 4/9 -10
   p = -9 5/9
 
        
             
        
        
        
Answer:
just wanted to let you know you didn't attach a picture would love to answer question in comments once I can see the photo