Samantha randomly picks marbles from a box. She replaces each marble after she picks it. There are 6 red marbles, 5 blue marbles, & 7 green marbles in the box. a. Complete the probability model for picking a marble from the box.

b. Determine wether this probability model is a uniform or non-uniform probability model. Explain your reasoning.

Which of the choices shown could be used to prove that aacp=abcp ?

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.

Jacob is graphing the line represented by the equation  −6x−5y=12.−6x−5y=12.  he first plots the  x-x-  and  y-interceptsy-intercepts  as follows.    which statement is correct regarding the intercepts on the graph?