Answer:
I want to it's the fourth one
We know that
X²+y²=9 -------> X²+y²=3²
is the equation of a circle with center (0,0) and radius r=3 units
so
<span>the translation of four units to the right and three units down is equals to move the center (0,0)--------> (0+4,0-3)------> (4.-3)
the new center of the circle is (4,-3)
the new equation is
(x-4)</span>²+(y+3)²=3²
see the attached figure
Set up a proportion

x is the estimated number of returned phones. cross multiply to find x
12 x 2000 = 24000
350 x X = 350x
24000=350x
Divide
x=68.57
B.) 68
imagine the diagonal of a rectangle being the split between two triangles. you are trying to find the longest side of the triangle, which is the "diagonal" of the rectangle.
to find the length of a side of a triangle, use the Pythagorean theorem. it is : a^2 + b^2 = c^2
so... plug in your data like this...
15^2 + 12^2= c^2.
225 + 144 = the square root of 369.
that is rounded to 19.2
this is just how I would solve this problem, if I helped you out please just let me know by voting me brainliest! Haha just kidding :)
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