Answer:
- 24 ounces of solution B
- 16 ounces of solution A
Step-by-step explanation:
The largest contributor of salt to the mix is the 45% solution (B), so we'll let our variable (b) represent the quantity of that. The total amount desired is 40 ounces, so the quantity of solution A is (40-b) ounces. Then the amount of salt in the mix is ...
0.45b +0.20(40-b) = 0.35(40)
Simplifying and subtracting 0.20(40), we get ...
0.25b = 0.15(40)
b = 40(.15/.25) = 24
(40-b) = 16
The scientist should use 24 ounces of Solution B and 16 ounces of Solution A.




First, write both the equations in its standard form.

Now, write the equations in form of matrix.

Then, multiply the equation towards the left by using the inverse of matrix 

The product of the matrix & its inverse will be the identity matrix.

Now, multiply the matrices that lie on the left-hand side of the equal sign.

For the 2 × 2 matrix
, the inverse matrix is ⇨
.

Do the calculations.

Multiply the matrices.

Do the arithmetics again.

Finally, extract the matrix elements x & y & write them separately.

Composite because the factors that go into it ate 2 and 9, 1 and 18, 6 and 3
Sorry to ruin ur chance of getting help bud but we can’t see the answer choices