Abag contains black, white, and red marbles. the number of white marbles is 2 more than the number of black marbles, and the number of red marbles is 4 times the number of white marbles. which of the following could be the total number of marbles in the bag?

1. there are 25 students who started computer programming in elementary school and 25 students who started computer programming in middle school. the first group had a mean final project grade of 95% and the second group had a mean final project grade of 92%. the line plot shows the differences after 10 rerandomizations. determine whether the difference in the means of the two groups is significant based on the line plot. explain your answer.

Draw a tape diagram to represent each situation. for some of the situations, you need to decide what to represent with a variable andre bakes 9 pans of brownies. he donates 7 pans to the school bake sale and keeps the rest to divide equally among his class of 30 students

Which of the following equations is equivalent to x/3-6/x=1