Determine whether the triangles must be congruent if so name the postulate or theorem that best justifies your answer

If 1 km = 0.621 miles, how many miles are in a centimeter

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Aclothing store has the sign shown in the shop window. pani sees the sign and wants to buy 3 shirts and 2 pairs of jeans. the cost of each shirt before the discount is $12, and the cost of each pair of jeans is $19 before the discount. write and simplify an expression to find the amount pani pays if a $3 discount is applied to her total