An electronics company produces transistors, resistors, and computer chips. Each transistor requires 3 units of copper, 2 units of zinc, and 1 unit of glass. Each resistor requires 3, 1, and 2 units of the three materials, and each computer chip requires 2, 1, and 2 units of these materials, respectively. How many of each product can be made with 1600 units of copper, 1025 units of zinc, and 625 units of glass? Solve this exercise by using the inverse of the coefficient matrix to solve a system of equations.

475 transistors, 25 resistors and 50 computer chips can be produced.

Step-by-step explanation:

Let us consider, p = Number of transistors.

                           q = Number of resistors.

                            r = Number of computer chips.

The following three linear equations according to question,

The matrix form of any system, Ax = B

Where, A = Coefficient matrix

            B = Constant vector

            x = Variable vector

The inverse matrix, can be found by using the following formula,

Where, det A = Determinant of matrix A.

                  = Matrix of cofactors of A

Now, applying this formula to find ;

Here, , thus the matrix is invertible.

So, p = 475, q = 25, r = 50.      

1. d.90

2. e. none of these (80)

3. a. 0

4. b. 6

5. e. none of these (10)

6. a. 5

step-by-step explanation:

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