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I need some help on number 4...Also, was my answer right for number 5, I believe it is..

I need some help on number 4...Also, was my answer right for number 5, I believe it-example-1
User Renaldo Balaj
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1 Answer

28 votes
28 votes

In order to find the solution of this system of equations, we need to find the ordered pair that is a solution to both equations.

To do so, let's use the value of x from every option and calculate the corresponding value of the functions:


\begin{gathered} x=0\colon \\ f(0)=\sqrt[]{0+4}=2 \\ g(0)=0-4=-4 \\ \\ x=1.6\colon \\ f(1.6)=\sqrt[]{3.2+4}=2.68 \\ g(1.6)=1.6^3-4=0 \\ \\ x=-1.3\colon \\ f(-1.3)=\sqrt[]{-2.6+4}=1.18 \\ g(-1.3)=(-1.3)^3-4=-6.2 \\ \\ x=1.9\colon \\ f(1.9)=\sqrt[]{3.8+4}=2.8 \\ g(1.9)=(1.9)^3-4=2.8 \end{gathered}

So the correct option is the fourth one.

User Gaetan
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