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Dimas [21]
3 years ago
9

F(x)=2x+3/4x+5find f(-9)​

Mathematics
2 answers:
mylen [45]3 years ago
6 0

\implies {\blue {\boxed {\boxed {\purple {\sf { f(-9)= 0.48}}}}}}

\large\mathfrak{{\pmb{\underline{\orange{Step-by-step\:explanation}}{\orange{:}}}}}

f(x) =  \frac{2x + 3}{4x + 5} \\

For f(-9), put "-9" for every value of "x".

↬f( - 9) =  \frac{2( - 9) + 3}{4( - 9) + 5}\\

↬ f(-9) =  \frac{ - 18 + 3}{ - 36 + 5} \\

↬ f(-9) =  \frac{ - 15}{ - 31}\\

↬ f(-9)=  \frac{15}{31}\\

↬f(-9)=  0.48\\

\bold{ \green{ \star{ \red{Mystique35}}}}⋆

zhenek [66]3 years ago
6 0

\huge\textsf{Hey there!}

\mathsf{f(x) = \dfrac{2x + 3}{4x + 5}}

\mathsf{y = \dfrac{ 2x + 3}{4x + 5}}

\mathsf{y = \dfrac{2(-9) + 3}{4(-9) + 5}}

\mathsf{2(-9)}

\mathsf{\bf = -18}

\mathsf{y = \dfrac{-18 + 3} {4(-9) + 5}}

\mathsf{-18 + 3}\\\mathsf{= \bf -15}

\mathsf{y = \dfrac{ -15} {4(-9) + 5}}

\mathsf{4(-9)}\\\mathsf{\bf = -36}

\mathsf{y = \dfrac{-15}{-36 + 5}}

\mathsf{-36 + 5}\\\mathsf{= \bf-31}

\mathsf{y = \dfrac{-15}{ -31}\rightarrow\boxed{\bf \dfrac{15}{31}}}

\boxed{\boxed{\huge\text{Answer: } \boxed{\bf f(-9) = \dfrac{15}{31}}}}\huge\checkmark

\huge\text{Good luck on your assignment \& enjoy your day!}

~\frak{Amphitrite1040:)}

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