11. select the proper placement for parentheses to speed up the addition for the expression 2 + 9 + 8 + 1 a. (8 + 2) + (9 + 1) b. (9 + 2) + (8 + 1) c. (8 + 9) + (2 + 1) d. (1 + 2) + (9 + 8)

Design a number line containing five (5) points2.benin, one of the smallest countries in africa, has a total area of 43,475 square miles. the population of the country was recently estimated at 10,160,555. about 3,657,790 people live in rural areas. the country has only about 870 miles of surfaced roads. a. round off the total population to the nearest hundred thousand people. b. round off benin’s area in square miles to the nearest thousand. c. round off the number of miles of surfaced roads to the nearest ten. d. round off the number of people who live in rural areas to the nearest million.

What does the relationship between the mean and median reveal about the shape of the data

Luigi is the first person to finish a 5k race and is standing 13 feet beyond the finish line. another runner, mario, is still running the race and has approximately 24 feet before he reaches the finish line. what is the distance between mario and luigi? explain through words, numbers or pictures how you found the answer.