(1) x = 4
(2) x^2 + y^2 = 4
(3) x + y = 16
(4) x^2 + y^2 = 16
2007-12-15 15:28:06 · 4 answers · asked by Kevin G 2 in Science & Mathematics ➔ Mathematics
A circle centre O and radius 4
x² + y² = 4²
x² + y² + 16
OPTION (4)
2007-12-19 09:56:17 · answer #1 · answered by Como 7 · 1⤊ 0⤋
locus of points 4 units from the origin:
basically it's a equation of circle with center (0,0) and radius 4
so
(x-0)^2 + (y-0)^2 = 4^2
=> x^2 + y^2 = 16
Answer (4) is correct
2007-12-15 15:34:22 · answer #2 · answered by KDFC 3 · 1⤊ 0⤋
they provide you the circumstances that the park area has to fulfill, and that they inform you to comedian strip all the appropriate factors and placed an "X" on all available places for the park. Plot factors A and B. The park ought to be equidistant from those 2 factors. So discover the midpoint of AB, and draw the the horizontal line with the aid of it. The factors alongside this line are equidistant from A and B. The park ought to be precisely 5 miles from the middle of city, it is at (0,0). what's the set of all factors precisely 5 gadgets faraway from (0,0)? it is the circle with center at (0,0) and radius of five. So go draw that. Now draw an X on any factors the place your line and circle intersect. those are the factors the place the two circumstances are met. you ought to get 2 factors.
2016-11-03 10:25:18 · answer #3 · answered by pigman 3 · 0⤊ 0⤋
i'll go with answer 2.
2007-12-15 15:30:36 · answer #4 · answered by Anonymous · 0⤊ 0⤋