Answer:
-2?
Step-by-step explanation:
Answer:
Polynomials are closed under addition. When subtracting polynomials, the variables and their exponents do not change. Only their coefficients will possibly change. This guarantees that the difference has variables and exponents which are already classified as belonging to polynomials.
Step-by-step explanation:
Answer: A.
Step-by-step explanation:
The square root of 144 is 12
Answer:
9+9
Step-by-step explanation:
9+9=18
23-5=18
Answer:
600
Step-by-step explanation:
Let's consider this question using algebra.
Imagine the number of bricks in the original pile is 
.
We are told that 
of the bricks are used for a project, meaning that 
has been used, leaving us with 
as our remainder.
Then, we are told that 
of the remainder are used to leave us with 50 bricks. This means that 
of the remainder is left, and this is equal to 50 bricks. This means that the remainder's original amount is equal to 150, because we are told that of the remainder is equal to 50.
So, we know that the remainder is 150, and we also know that the remainder is 
. Let's now use these to form an equation.
Because we know that a quarter of the original amount of bricks is equal to 150, we can multiply both sides of the equation by 4 to get the original amount of bricks in the pile.
So, there were 600 bricks in the original pile.
