The linear combination method is the same as the elimination method. Let's multiply the second equation by -2 so the x terms cancel each other out. When we do that we get a system of

and

. The x-terms cancel each other out giving us

and y = -3. Now sub -3 into one of the equations to solve for x. x+2(-3)=-4, and x - 6 = -4. x = 2. So the solution for our system is (2, -3)
The 1905 was 3.0 inches while 2004 was 4.2 inches since they are 1.2 apart and they add up to 7.2
Since the length is 10 in. You must multiply it by

and then multiply by

. The reason for this is because if you divide ten by 5 it will be 2, then if you divide 2 by 2 it will be 1.
Answer:
DBE = 33
Step-by-step explanation:
add 23 + 27 = 50
subtract 50 from 83
equals 33