Answer:
Step-by-step explanation:
Volume is height times width times length so to find the height you just do the opposite. Using h as height we put the equation like so...
43.875=5 * 3.9 * h
Now divide and we get
2.25=h
Your answer is 2.25
The highest common factor of the two terms is 3, so that goes outside the bracket as 3(____). To get 3x^2, you multiply 3 by x^2, which is your first term in the bracket, and to get -21, you multiply 3 by -7, so your final answer is 3(x^2 - 7). I hope this helps!
