The intensity of a sound describes
a. its speed.
b. its loudness at a particular distance.
c. the distance and medium through which it travels.
d. the medium through which it travels.
select the best answer from the choices provided

Two rigid transformations are used to map δhjk to δlmn. the first is a translation of vertex h to vertex l. what is the second transformation? a reflection across the line containing hk a rotation about point h a reflection across the line containing hj a rotation about point k