Solve for x2/x -2 = 3/2x +3
1 answer:
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Answer:
Step-by-step explanation:
Given
Required
Determine the inverse function
Start by replacing f(x) with y
Swap the positions of y and x
Make y the subject: <em>Add 4 to both sides</em>
Make y the subject: <em>Divide through by 2</em>
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Replace y with f-1(x)
Answer:
RS = 2
Step-by-step explanation:
Using Pythagoras' identity in the right triangle
RS² + RT² = TS² , that is
RS² + 6² = 8²
RS² + 36 = 64 ( subtract 36 from both sides )
RS² = 28 ( take the square root of both sides )
RS = =
= 2
≈ 5.3 ( to 1 dec. place )