Which pair or pairs of polygons are congruent? a 3n4
b 1n3
c 1,3n4
d 2,3n4
e 1234

15                                              

Step-by-step explanation:

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled