3(2a+5) + 2 (4a+1) expand and simplify please! :))

For what value of jn is mn parallel to kl

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?

If rt is greater than ba, which statement must be true ?