You must try to remove one of the unknown variables from the system by multiplying one in a way that when adding (or subtracting) one to another “makes it disappear” and so whatever value you get can be substituted back in to get the other unknown!
I’ll do an example you have the numbers 1,5,7,2,9 you can tell the median is 7 right? So go from the very left and the median (7) and do the same thing you do to find median. (Id recommend crossing the numbers off as you go if that makes sense! :)
Answer:
a
Step-by-step explanation:
a
Answer:
£43
Step-by-step explanation:
925×2/100
=£ 18.5
2.4 years =18.5×2.4
=£43
9 - 2(7 - 8)
9 - 2(-1)
9 - (-2)
11