A. 8 x 10^ -4
D. 3 x 10^ -2
Answer:
See below
Step-by-step explanation:
I will assume the given denominator is 3a as there is nothing attached to the statement.
Lets first look at the domain of 2a+b. As it is a polynomial with unknowns a and b, we know it has its domain in all real numbers for both a and b as every polynomial does. For verifying it replace a and b by any real number you can think of.
Domain = a, b belonging to R
Now, if we divide 2a+b by 3a we will have:
(2a+b)/3a
As know we don not have a polynomial we cant state that the domain will still be all the real numbers for sure. We need to go further.
We have a fraction and as every fraction the denominator CAN'T be equal to 0, so 3a MUST be different to 0. This means that a MUST be different to 0. So, now our domain changes:
domain' = a, b belonging to R and a different to 0.
Convert both to either yards or inches and you can just add the numbers. B is the right answer.
Answer:
Step-by-step explanation:
To solve this operation we need to find the common multiple of both denominators and solve for a.
Thus, the solution is 7(a -1) / (a+2)(a-5)
