Expressions cannot .....be solved.
3w-13w=-20
Combine like terms
-10w=-20
divide both sides by -10
w=2
You first divide both numbers by 4 to get one quarter which is the unit, and to get the rate, you divide 15 by 4 also. i got the unit rate is 3.75 points oer quarter.
Answer:

Step-by-step explanation:
Given



Required
Find Y
To do this, we make use of the mid-point formula
i.e.

WX and ZY are the diagonals of the parallelogram.
The mid-point of WX is:


The mid-point of ZY is:

Equate both values of M

Multiply both sides by 2

By comparison:








Hence:

Mean Absolute Deviation = 2.5