flying against the wind an airplane travels 8460 kilometers in 9 hours. flying with the wind, the same plane travels 9600 kilometers in 8 hours. what is the rate of the plane in still air and what is the rate of the wind

Let a be the speed of the plane and w the wind speed.

a - w = (8460 km)/(9 h) = 940 km/h

a + w = (9600 km)/(8 h) = 1200 km/h

Add these speeds together to eliminate w and solve for a :

2a = 1740 km/h

a = 870 km/h

Subtract the first vector from the second to eliminate a and solve for w :

2w = 260 km/h

w = 130 km/h

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: i guess 105 degrees?

step-by-step explanation: