answer a- always
step-by-step explanation: the corresponding angles are congruent and the corresponding sides are proportional with each other. thus, having a pair of similar polygons would mean that its corresponding angles would always be congruent.
u is because it's your total amount
12 is because christopher has 12 less then you which also explains the minus sign
z is representing the amount of cards you have
the first sentence is .
we simplify the left hand side by applying this property to get;
we now rewrite the right hand side too in an index form to obtain;
we now equate the exponents to get;
the second sentence is
we simplify the left hand side first to get;
we now rewrite the left hand side too in index form to obtain;
we equate the exponents to get;
this implies that;