I think the correct answer would be A. 3x+y-3=0
because if you were to change it to slope intercept form, it would be y=-3x+3, which would be the equation for the line on the graph.

8 0

3 years ago

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Solve in |R 2cos(2x) +√2 = 0

Alexxx [7]

It is given that:

$\begin{gathered} 2\cos 2x+\sqrt[]{2}=0 \\ 2\cos 2x=-\sqrt[]{2} \\ \cos 2x=-\frac{\sqrt[]{2}}{2} \end{gathered}$

cos2x is negative square root 2 divided by 2 in the second and third quadrants, so it follows:

$\begin{gathered} \cos 2x=\cos \theta \\ 2x=2n\pi\pm\theta \end{gathered}$

Here theta is given by:

$\theta=\pi-\frac{\pi}{4}=\frac{3\pi}{4},\theta=\pi+\frac{\pi}{4}=\frac{5\pi}{4}$

So the solution is given by:

$\begin{gathered} 2x=2n\pi\pm\frac{3\pi}{4};2x=2n\pi\pm\frac{5\pi}{4} \\ x=n\pi\pm\frac{3\pi}{8};x=n\pi\pm\frac{5\pi}{8} \end{gathered}$

4 0

1 year ago

Can someone please help me with this 7+9x(3+8)=

Semenov [28]

Answer:

99x + 7

hope this helps:)

4 0

3 years ago

Merida wrote the table of points below. Which explains whether or not Merida has described a proportional relationship, and why?

Varvara68 [4.7K]

Answer:

Step-by-step explanation:

When graphed, it doesnt not pass through the origin, but it is completely staight/linear.

4 0

3 years ago

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