Time to tests mathmaticians

Step-by-step explanation:

coordinates of A,B,C are A(5,15),B(15,5),C(20,10)

AB=√((15-5)²+(5-15)²)=√(100+100)=√200=10√2

BC=√((20-15)²+(10-5)²)=√(25+25)=√50=5√2

AC=√((20-5)²+(10-15)²)=√(225+25)=√250=5√10

Perimeter=10√2+5√2+5√10=15√2+5√10≈37 units

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: give more info

step-by-step explanation: