Use the zero product property to find the solutions to the equation x2 – 9 = 16. x = –3 or x = 3 x
= –6 or x = –3 x
= –5 or x = 5 x
= 7 or x = 1

x^2-9=16

x^2=16+9

x^2=25

=±5

(-5 or 5)

Verification:

5^2-9=16

25-9=16

(-5)^2-9=16

25-9=16

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.

answer: b.48 for

step-by-step explanation: