What are the zeros of the function y = 2x2 +9x+4 ? O A. x= 1/2, x =-4
O B. x= -1/2, x=4
O C. x= -1/2, x=-4
O D. x= 1/2, x=4

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.

pls ask

the answer is b.)

< 1=< 2

- (2, -7)

- lines r and s and lines t and u must be parallel