How do I know where which choices below go into the correct blanks for number 1-4?

Answers

These graph is cross the yaxis and x axis two ways.
Which statement is true regarding the graphed functions?
555%=6786666vgggcccf
Which equation can be solved to find x the measure of jk in the diagram?

For 1, we have the following triangle:

Using the cosine function to get the hypotenuse we get:

\begin{gathered} \cos (45)=\frac{7}{h} \\ \Rightarrow h=\frac{7}{\cos(45)}=\frac{7}{\frac{1}{\sqrt[]{2}}}=7\cdot\sqrt[]{2} \\ h=7\cdot\sqrt[]{2} \end{gathered}

Now that we have the hypotenuse, we can find the remaining side using the pythagorean theorem:

\begin{gathered} h^2=7^2+x^2 \\ \Rightarrow x^2=h^2-7^2=(7\cdot\sqrt[]{2})^2-7^2=49\cdot2-49=49 \\ \Rightarrow x^2=49 \\ x=7 \end{gathered}

Therefore, the value of the remaining side is 7.


How do I know where which choices below go into the correct blanks for number 1-4?


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