The length of each of the two congruent sides d an isosceles triangle is 2x + 3. the length of the third side is 2x. it’s perimeter is 36 cm. solve for x and then find the length of all three sides

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