Let's start by combining the values that are similar... we have two values with a w so we can change the equation from
-6w-4+2w=4
to
-4w-4=4
Now, we want to get w alone and in order to do this, we must first make the -4 go away.
<span>The basic rule of doing these problems is to know that anything you do to one side (such as subtract or add a number or divide or multiply by a number) must be done to the other side as well.
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In order to get rid of the -4, we want to add 4, which we will do to both sides
-4w=8
now, in order to get w alone, we must divide by -4 on both sides
w=-2
Answer:
ACDBA, $900
Step-by-step explanation:
The cheapest route will be the one with the lowest cost. Of the routes listed, the cost $900 is the lowest, so route ACDBA is the cheapest.
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The "Brute Force Method" requires you compute the costs of the possible routes and pick the lowest. The answer choices have done that for you.
The cost of ACDBA is AC +CD +DB +BA = 240 +230 +210 +220 = 900, as shown in the answer selections.
The three routes listed, and their reverses (which are the same cost), are the only possible routes starting and ending at A.
It will take the pipe a total of 8 hours to leak out 28 gallons. You can get this answer by dividing 28 by 3.8. Hope this Helps!
