Simplify each sum

(5m^4+7-m^3)+(7m^3-7m^2+1)

Step-by-step explanation:

5m4 + 7 - m3 + 7m3 - 7m2 + 1

Solving like terms

5m4 + 6m3 - 7m2 + 8

x^6

step-by-step explanation:

this is correct because:

x-6=0

0*x=0

so

x^6

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.