A plane flies 400 miles with a tailwind of 20 miles per hour and another 360 miles against the wind . If the total trip makes 8 hours, write an equation that can be used to find the speed of the plane with no wind.​

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.

5   1/4   miles per hour

step-by-step explanation:

15   3/4 / 3 = 5   1/4

the square root of what number? if you add that, then someone will probably answer the question.

i think the answer is b x = 1, y = 35/2