Find the common difference of the arithmetic sequence-9, -13,-17, ... ​

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?

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

What is the value of x in the equation (2)3) (x+6)= -18 a. -36 b. -33 c. -24 d. -18