Factor the polynomial m^2 + 13m + 42

(m+6)(m+7)

Consider the form  

x

2

+

b

x

+

c

. Find a pair of integers whose product is  

c

and whose sum is  

b

. In this case, whose product is  

42

and whose sum is  

13

.

6

,

7

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.

sites: