Select the correct answer. which expression has a greatest common factor of 3h? a. 18h2 − 6h b. 3 − 9h c. 6h2 − 2h d. 12h + 21h2

D. 12h + 21h2

Step-by-step explanation: The answer is D,

because when you devide 12h/3h = 4

and for the other value 21h2/3h=7h

4 + 7h

if you perform the same operation with the rest of answers you will get a minor values if you compare with this results, because of that the answer with the greatest common factor is D.

Step-by-step explanation:

A.

Both 18 and 6 are divisible by 6. GCF of h^2 and h is h. So GCF is 6h

B.

3 and 9 are divisible by 3. So GCF is 3

C.

6 and 2 are divisible by 2. GCF is not 3 here

D.

Both 12 and 21 are divisible by 3. GCF of h^2 and h is h

So GCF is 3h

it has changed from the width and the height.

step-by-step explanation:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,