The first equation, 2x+y-8=0 :)
<span>For this case we have the following equation:</span>
<span> (x + 2) 2 + y2 = 10</span>
<span> We must remember that the standard equation of the circle is given by:</span>
<span> (x - h) 2 + (y - k) 2 = r2</span>
<span> Where r is the radius.</span>
<span> Therefore, in the given equation the radius is:</span>
<span> r ^ 2 = 10</span>
<span> Clearing we have:</span>
<span> R = root (10)</span>
<span> Answer:</span>
<span> The length of the radius of the circle is:</span>
<span><span> √ (10)</span></span>
For questions like these, what I like to do is plug in multiple points and see where they end up. I prefer simplicity, so I'll plug in a simple point -- x=3. If a or c was our graph, our y point would be at 3. As it is not, our options are left at b and d. For a square root, we know that 4 has a relatively simple square root, as its root is 2. To get 4 inside the square root box, x+3 must be equal to 4, so x=1. Plugging x=1 into both b and d, we get 2+3=5 and something else for d. Since y is not equal to 5 when x=1, b is incorrect and d is our answer. To ensure this, we could plug in a point for d. As we know that the cube root of 8 is 2, we could make sure that we have 8 inside the cube root box by making x equal to 5, and our y value would then be 2+3=5. As y=5 when x=5, these match up and d is our answer.
Feel free to ask further questions, and Happy Holidays!
I think it’s c I had this question lol
Answer:
I don't know the answer to your question sorry but can u give me brainliest
