Which statement can be used to prove ∠2≅∠4? ∠2∠4
∠2 and ∠4 are adjacent angles.
∠2 and ∠4 are adjacent angles.

∠1∠2∠4.
∠1 is supplementary to both ∠2 and ∠4.∠1 is supplementary to both ∠2 and ∠4.

∠1∠2
∠1 and ∠2 are vertical angles.
∠1 and ∠2 are vertical angles.

∠2∠1∠3.
∠2 is complementary to both ∠1 and ∠3.

5

step-by-step explanation:

the polynomial is a perfect square trinomial of the form a^2-2ab+b^2:

option a. true

step-by-step explanation:

9x^2-12x+4

comparing with the form a^2-2ab+b^2

1.) a^2=9x^2

solving for a: square root both sides of the equation:

sqrt(a^2)=sqrt(9x^2)

a=sqrt(9) sqrt(x^2)

a=3x

2.) b^2=4

solving for b: square root both sides of the equation:

sqrt(b^2)=sqrt(4)

b=2

to be a perfet square trinomial 2ab must be equal to 12x. let's check:

2ab = 2 (3x) (2)

2ab = 12x

correct