Answer:
144
Step-by-step explanation:
12x12=144
I think its 384 because if you multiply the two numbers underneath then you get 384 which is how they got all the other numbers
Answer:
It's when rates are expressed as quantities.
Step-by-step explanation:
An example would be miles per hour (mph). People use these to determine the distance they will go in an amount of time and to judge safe speed.
Answer:
a^2 + 3b - 2a^2 = 3a^2 +3b -4a^2
Step-by-step explanation:
-a^2 + 3b + 2a^2 = 3a^2 +4b -2a^2
Combine like terms
a^2 +3b = a^2 +4b
-a^2 + 3b -2a^2 = 3a^2 + 3b
Combine like terms
-3a^2 +3b = 3a^2 +3b
a^2 + 3b - 2a^2 = 3a^2 +4b -4a^2
Combine like terms
-3a^2 +3b = -a^2 +4b
a^2 + 3b - 2a^2 = 3a^2 +3b -4a^2
Combine like terms
-a^2 +3b = -a^2 +3b
The left side is the same as the right
You have chosen correctly.