Step-by-step explanation:
-10a×4b+20a^2b-2ab
-40ab+20a^2b-2ab
-42ab+20a^2b Answer
I'm not sure...
(3 + 2 - 5) and (4i - 3i + 6i)
= 0 + 7i
Answer:

Step-by-step explanation:


Rewrite equation: 


Factor out
:

Divide both sides by
:




Anything to the power of 1 is itself. Hence,


Step-by-step explanation:
Examples of categorical variables are race, genders, ages, and education levels. While the closing two variables may be considered in a numerical manner by using exact values for age and the high grade completed, it is always informative to put such variables into a relatively small number of groups.