Answer: a = 
Step-by-step explanation:
Rewrite the equation as 4a + 9ab=K
Factor out a of 4a + 9b
a (4 + 9b) = K
divide each term by 4 + 9b and simplify
=
Answer:
It would take 24 hours for Max to steal all the gifts himself
Step-by-step explanation:
The together rate is the sum of each separate rate.
In this problem:
Together rate: 1/8
Grinch's rate: 1/12
Max: 1/x
So







It would take 24 hours for Max to steal all the gifts himself
This is impossible to answer. This all depends on what you define as a 'person.' If you are talking about the first Homo Sapiens, then that would be around 2 million years ago, but the predecessors of Homo sapiens could also be considered 'people,' so then you'd have to determine at what point they came into existence.
No it is not. Rational numbers are whole numbers, such as 1, 532, 56.