135 0 Use the diagram below and a protroctor, measure each angle below and classity it as acute, obtuse, right, or straight. B 1. MZEDB = Classify: 90 0 2. m ZFED = Classify: F 0 60 3. mZBCD = : Classify: 0 180 4. mZFE = J: Classify: E C​

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?

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?

See attachment below and find the equivalent of tan(∠qsr)