Graph abc with vertices a(-4,-5) b(2,8) c(-1,-2) and it’s image after a reflection in the line y=3

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Suppose i flip two identical coins. what is the probability that i get one head and one tail?

How many $20 bills do you need to have to make $280