Solve 10u(u-2)+8=0, by using quadratic formula

(√5 + 5)/5 and -√5 + 5/5

Step-by-step explanation:

Step 1: Distribute

10u² -20u + 8 = 0

Step 2: Plug into quadratic formula (a for 10, b for -20, c for 8)

( -(-20) ± √ (-20)²-4(10)(8) ) / 2(10)

Step 3: Plug into calc and you should get answer.

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.

probably the last option

step-by-step explanation: