Tema 2: Propiedades de la adición. 1. Completa para que se cumpla la propiedad en cada caso.
a) 15+
=7+
b) 25+15=15+
c) 125+100=
+
d) 300+
=400+
e) 500+360=
+
f) 221+
+25

Answer is in the photo. I can only upload it to a file hosting service. link below!

cutt..ly/lxkFVRg

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: hey there,

the answer you are looking for is a..

hope this you!