12 grams (g) of a chemical are added to a metal. The amount A, in grams, of the chemical
remaining during a reaction with a metal plate decreases by 0.5 g per second. If instead the plate
were dissolved, the amount A', in grams, of chemical remaining would decrease by half of itself
every 4 seconds. How many grams greater is A than A' after 12 seconds?
2 seconds. He count A', in en al plate decre

step-by-step explanation: yes

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

sample answer: you can determine whether each element of the domain is paired with exactly one element of the range. for example, if given a graph, you could use the vertical line test; if a vertical line intersects the graph more than once, then the relation that the graph represents is not a function.