Derek brought a game console for 96.00 he marks the price up 10 %before he resells it for a profit. at what price did Derek rese
1 answer:
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Answer:
Total number of points in the test = 100
Total number of items in the test = 40
Let number of items of 2 points be x and number of items of 3 points be y.
Now, using the given information the situation can be represented by using the following equations :
⇒ x + y = 40 .........(1)
⇒ 2x + 3y = 100 .........(2)
The matrix equation is :
By solving the equation (1) and equation (2), we get :
Solution : x = 20 and y = 20
Answer:
Step-by-step explanation:
First, notice that:
We proceed to use the chain rule to find using the fact that
to find their derivatives:
Because we know then:
We substitute in what we had:
Now we put in the values in the formula:
Because of what we supposed:
And we operate to discover that:
and this will be our answer