The summation from n equals 2 to 10 of negative 4 plus 5 times n

Four times a certain number, plus 9, equals seven times the number, minus 33. ... If 6 is added to twice a number, and 10 be subtracted from four times the number, the results are the ... The sum of two numbers is 67, and their difference is 5. ... Dividing by 2, n = 31, the smaller number, and n + 5 = 36, the greater number.

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.

1     sepan

2     encuentren

3     tenga

4     hable

5   parezca

6   llegue