380 grams total.
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From the looks of it, it is just smart substitution. Basically, you want to pick values for "x" in such a way that one of the variables disappear. Do this enough times and you can get a solvable set of equations.
So for (2)
Pick x = 1 (doing this removes the a variable)
We get:
4b + c = 1
Now pick x = -1 (doing this removes the b variable)
We get:
4a + c = 1
Now there is no way to remove the c variable so let's just pick x = 0.
We get:
a + b + c = 0
Now we have 3 set of equations and 3 variables.
Solve this by using Gauss-Jordan elimination or whatever other technique you know (Or just use an online matrix calculator).
You should get:
a = 1/2
b = 1/2
c = -1
Answer:
40.50 for 9 tickets
Step-by-step explanation:
We can use a proportion to solve
18 dollars x dollars
------------- = ---------------
4 tickets 9 tickets
Using cross products
18 *9 = 4x
162 = 4x
Divide by 4
162/4 = 4x/4
40.50 =x
Answer:
$5 per ticket
Step-by-step explanation:
If you put it into a ratio of movie tickets to cost it will be 7 : 35
When you simplify it the ration will be 1 : 5
Answer:
(D) all of the above.
Step-by-step explanation:
Mental accounting refers to this ability to organize your budget, to think about your money by separating it into different expenditure items. Your brain differentiates money based on how you got it and how you plan to spend it. In other words, you are creating some sort of mental piggy bank where you put your money which will be used for such and such an expense.
Mental accounting can be used to explain how higher savings are derived with various retirement accounts; how high clients purchasing a particular product are willing to spend on credit cards and also explains why brokers hold depreciating stocks longer than appreciating ones due to the mental thought that such depreciating stock will rise at a future time.
