Look at the given equation. Roy and Sam start solving the equation as follows. Which student's work is correct so far and what property did he use? A. Roy's work is correct so far. He used the subtraction property of equality. B. Roy's work is correct so far. He used the addition property of equality. C. Sam's work is correct so far. He used the addition property of equality. D. Sam's work is correct so far. He used the subtraction property of equality.

the answer is a

step-by-step explanation:

because your just changing the position of where the shape is

10.416 meters per second

step-by-step explanation:

distance=1 00 meters

time= 9.6 seconds in decimal form or 9 3/5 as a mixed number

average speed= 100/9.6

=10.416 meters per second or 10 52/125 as a mixed number.

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