A shade of green paint is made by mixing blue paint and yellow paint in the ratio of 4 to 3. How many pints of blue paint and ye
llow paint are needed to make 21 pints of the green paint?
A.
12 pints of blue paint and 3 pints of yellow paint
B.
9 pints of blue paint and 12 pints of yellow paint
C.
16 pints of blue paint and 9 pints of yellow paint
D.
12 pints of blue paint and 9 pints of yellow paint
A.
12 pints of blue paint and 3 pints of yellow paint
B.
9 pints of blue paint and 12 pints of yellow paint
C.
16 pints of blue paint and 9 pints of yellow paint
D.
12 pints of blue paint and 9 pints of yellow paint
2 answers:
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Answer:
see explanation
Step-by-step explanation:
To show f and g are inverses we require to show that
f(g(x)) = x and g(f(x)) = x
f(g(x))
= f(6x - 4)
= =
= x
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g(f(x))
= g( )
= ( 6 × ) - 4
= x + 4 - 4 = x
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Hence f and g are inverses