2. which of the following demonstrates the commutative property of addition?

a.4+2 = 2 + 4
b.0(3 + 1) = 0
c.(1 + 2) + 3 = 1 + (2 + 3)
d. a·1=a

Which shows the pre image of triangle xyz

Which statement accurately explains whether a reflection over the y-axis and a 270° counterclockwise rotation would map figure acb onto itself? a coordinate plane with figure acb with point a at 1, 1, c at 3, 4 and b at 5, 1 yes, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) yes, a″c″b′ is located at a″(1, 1), c″(3, 4), and b″(5, 1) no, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) no, a″c″b″ is located at a″(1, 1), c″(3, 4), and b″(5, 1)

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cot of 61.6