For choices 1 through 4, select which expressions are equivalent (equal) a
(4^3)^3 and 4^3 * 4^3
b
(3^4)^4 and 3^8 * 3^8
c
6^4 * 3^4 and 18^8
d
4^3 * 5^3 and 20^3

M∠abc=138° and m∠def=31° . which statement is true about ∠abc and ∠def ? a: the angles are neither complementary nor supplementary. b: the angles are complementary. c: the angles are supplementary.