Which expression is equivalent to the measure of _4 in the image below? m_1+m_2
m_1+m_3
m_2+ m_6
m_5+ m_6

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 inequality comparing two of the expressions is true when 0.7 < x < 0.9

Simplify the expression. -2/5(10+15m-20n)