Arectangle has perimeter 58 cm and length 21 cm. what is it's width?

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?

Complex numbers multiply √-4 * √-25 and show all intermediate steps. alternative notation is sqrt(-4) * sqrt(-25).

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.