What are possible coordinates of point d if def is
congruent to abc?
(-6,1)
(-6,2)
(-5,1)
(-5,2)

a = 3.14

b = 18

c = 18/5 or 3.6 or 3 3/5

step-by-step explanation:

sounds & other waves originate from any vibrating object

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