What is the radius of a circle whose equation is (x 5)2 (y – 3)2 = 42? A. 2 units
B. 4 units
C. 8 units
D. 16 units.

B. 4 units

Step-by-step explanation:

(x- 5)^2 +(y – 3)^2 = 4^2

This equation is in the form

(x-h)^2 + (y-k) ^2 = r^2

where (h,k) is the center and r is the radius

The radius is 4

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

answer: this is not a question

step-by-step explanation: this is a answer