Is my answer correct and how do you know? I just graphed it , is there another way I could do it?
2 answers:
Yes and yes,
the equation of a circle with a center at (h,k) with a radius of "r" is
you know the center (h,k) is (-3,1) and r= 10, so you could plug in the answers and see which ones will match
A more intuitive method of doing it is to recognize that the given equation is like the pythagorean theorem. Also, know that a 3-4-5 is a right triangle and thus a 6-8-10 is also a right triangle.
since radius is 10, that means the other 2 values (x-x1) and (y-y1) must be equal to 6 and 8, so find the answer that will give yuo 6 and 8
the equation of a circle with a center at (h,k) with a radius of "r" is
you know the center (h,k) is (-3,1) and r= 10, so you could plug in the answers and see which ones will match
A more intuitive method of doing it is to recognize that the given equation is like the pythagorean theorem. Also, know that a 3-4-5 is a right triangle and thus a 6-8-10 is also a right triangle.
since radius is 10, that means the other 2 values (x-x1) and (y-y1) must be equal to 6 and 8, so find the answer that will give yuo 6 and 8
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<h3>Answer:</h3>
One of ...
- 6,301.005
- 6.301005×10³
It depends on where you are.
In the US, standard form is the way you have written the number. Your number would be 6,301.005.
The attachment gives some guidance for number formats in American publications. In certain publications, thin spaces are used instead of commas to separate groups of digits. The comma (or space) is often optional, but can enhance readability for large numbers.
In Britain, standard form is the form called "scientific notation" in the US. Your number would be 6.301005×10³.