In general, any equation like
(assuming
) is solved by

So, in your case, the solution is

Dividing by a fraction means to multiply by the inverse of that fraction:

From the given information:
Circle 1:
Center (5,8)
radius= 8 cm
Circle 2:
Center (1,-2)
radius= 4 cm
The above circle are similar because you can translate Circle 1 using the transformation rule (-4,-10) translation and dilate it using a scale factor of 4/8=1/2
There are 3 adult leaders since 18-3 = 15 then 15/5= 3
Step-by-step explanation:
a/20=10
=a=10×20
a=200