Answer:
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Step-by-step explanation:
Answer: True
The domain and range swap when you go from the original function to the inverse. This is because the x and y swap places. Recall that the domain is the set of possible x inputs and the range is the set of possible y outputs.
Answer:
Step-by-step explanation:
Given
= - 
× -
= 
=
Answer:
Width =9 cm
Length =6 cm
Step-by-step explanation:
Let x be width, then length is x − 3
Let area be E. Then we have: E = x ⋅ (x −3)
54= x^2-3x
x^2-3x-54=0
We then do the Discriminant of the equation:
D=9+216
D=225
X1=3+15 over 2. which is 9
X2= 3-15. over 2. which is -6 Which is declined, since we can't have negative width and length.
Therefore x is 9. So width
So width = x = 9cm and length is x-3 = 9-3cm=6 cm
