Darren practiced piano 5 days this week. he practiced 3/4 of an hour each day.
how many hours did darren practice piano this week?

The multiplicative property of equality states that for real numbers a, b, c, and d, if a = b and c = d, then ac = bd. true false

What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?

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