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4vir4ik [10]
3 years ago
9

Y = x + 5 y=- 2x - 4 How do you so love this using Equal Values Method

Mathematics
1 answer:
IRISSAK [1]3 years ago
8 0
If y = x + 5, connect this y to the other side of the other equation. It’s possible because that’s what y is defined as. Solve it afterwards.


Step by step:

x + 5 = - 2x - 4
3x + 5 = - 4
3x = -9
x = -3
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If f(x)= 1/3x and g(x)=3x, then what are g * f (x) and g*f(1/2)
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The correct answer is:  3)  " x ;  1/2" .
_____________________________________________________
Explanation:
_____________________________________________________
Question 1) 

g [ f(x) ] = ? ;

→ Given:  " f(x) = 1/3 x " ;

→ Given:  " g(x) = 3x " ;  
__________________________________
g [ f(x) ] = g(1/3 x) = 3(1/3 x) = 1x = "x" .
__________________________________
Question 2)

g [ f(1/2) ] = ? ; 
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→  Given:  " f(x) = 1/3 x " ;

→  f(1/2) = (1/3) * (1/2) = (1*1) / (3*2) = (1/6) ;

→  g [ f(x) ] =  

          g(1/6) = 3* (1/6) = (3/1) * (1/6) = (3*1) / (1*6) = 3/6 = (3÷3) / (6÷3) = " 1/2 "  .
___________________________________________________________ 


3 0
3 years ago
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