Jake is riding an escalator. after riding for 3 seconds, he was 25 inches above the ground. a. how many inches is jake rising per second? b. at the rate jake is rising, how many inches above the ground will he be after riding the escalator for 15 seconds? justify your answer. c. the top of the escalator is 30 feet, or 360 inches, above the ground. will jake have reached the top 45 seconds after first getting on the escalator? why or why not?

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.

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x