Afather who is 42 years old has a son and a daughter. the daughter is three times as old as the son. in at present? 10 years, the sum of all their ages will be 100 years. how old are the two siblings

What is the the greatest common factor ?

Solve for x in the equation x2 - 12x + 36 = 90. x= 6+3x/10 x=6+2/7 x= 12+3/22 x = 12+3/10

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.