A speck of dust is 2.8 x 10-8 m wide. Which of the following is the best way to rewrite this quantity, using more appropriate units?
O A. 2.8 x 10-6 cm
B. 2.8 x 10-5 mm
O C. 2.8 x 10-11 km
O D. 2.8 x 10-8 m

Assume cd | ab are parallel. find m2. a) x= 50° (b) x = 70° c) x = 30° d) x = 60

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.

Find the number of positive three-digit even integers whose digits are among 9, 8, 7,5, 3, and 1.