cuál es el valor de la sig expresión algebraica número 1 12x+12 número 2 4(3x+3) número 3 4(x+3)+4(2x) solo necesito el valor de x​

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?

Which two undefined geometric terms always describe figures with no beginning or end?

Which expression gives the exact value of x?