How to find ratio for 16 and 56

Suppose you are choosing a 6-digit personal access code. this code is made up of 4 digits chosen from 1 to 9, followed by 2 letters chosen from a to z. any of these digits or letters can be repeated. find the total number of personal access codes that can be formed. 492,804 341,172 39,917,124 4,435,236

Interpret the following expression (5y^2-7)^3/(2y)^2

What is the area of parallelogram rstu? 21 square units 24 square units 28 square units 32 square units