Basic algebra question please help?? Which property is it showing:
DISTRIBUTIVE PROPERTY
SUBSTITUTION PROPERTY
SUBTRACTION PROPERTY
DIVISION PROPERTY

Solve the equation using the given values: x= -2.5; y= -7.51. 2xy + 2x²

After reading 80% of her e-mails in her inbox, danette still has m unread e-mails. which of the following expressions could represent the number of e-mails danette had in her inbox before she started reading? choose 2 answers: (choice a) 5m (choice b) 1.8m (choice c) 80m (choice d) m/0.8 (choice e) m/1−0.8

Determine if the solution set for the system of equations shown is the empty set, contains one point or is infinite. x + y = 5 x + y = 7 {} 1 solution infinite