Please help
Find the area of a rhombus

Solve the system by the elimination method. x + y - 6 = 0 x - y - 8 = 0 when you eliminate y , what is the resulting equation? 2x = -14 2x = 14 -2x = 14

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me