Question

Which statement is true for the circle?

options:
Its center is at,(1/2, -1) and the radius is -5/2 units.

Its center is at,(-1/2,1) and the radius is 5/2 units.

Its center is at,(1/2,-1) and the radius is 5/2 units.

Its center is at,(-1/2,1) and the radius is -5/2 units.

Answer 1

I could be wrong, but are you sure none of those 5's aren't square rooted?

Answer 2

yes i'm sure

Answer 3

Okay, that makes more sense given that, haha.

Answer 4

Yeah, without any more context I have to make assumptions, that pic was needed.

Answer 5

So like before, I have to have (x-__)^2 and (y-__)^2. Since the (x-(1/2))^2 is already negative, that makes the 1/2 coordinate positive. The opposite is true for the y term. (y+1)^2 means (y-(-1))^2. So those help give you the correct coordinates. Now since they gave you the equation form, that 25/4 is r^2. So if you want r, you have to take the square root of it.

Answer 6

so i take the square root of 25/4?

Answer 7

Yes.

Answer 8

so its 2.5

Answer 9

Which is the same as 5/2.

Answer 10

basically 5/2

Answer 11

Right. Did you put that into a calculator?

Answer 12

lol yes

Answer 13

is the answer c?

Answer 14

Yeah, if possible, it's usually best to get into the habit of sticking to fractions :P The higher you go in math, the more frowned upon decimals are. The two reasons decimals aren't used as much is 1, they can be harder to work with over fractions depending on what you're doing 2, theyre less accurate. For example, if I gave you 22/7 and you turnedit into a decimal, youd get 3.142857 and itd keep going. If you keep it as 22/7, its perfectly accurate :P

But yes, it is C, lol.

Answer 15

lol thanks for explaining it really helped :)

Answer 16

Yep, np. Im here if you got more, lol