Solve the problem using matrices.A chemist has prepared two acid solutions, one of which is 4% acid by volume, another 11% acid. How many cubic centimeters of each should the chemist mix together to obtain 50 cm3 of a solution that is 
acid.
A. 31 cm3 of 4%; 19 cm3 of 11%
B. 3.33 cm3 of 4%; 46.67 cm3 of 11%
C. No solution
D. 20 cm3 of 4%; 20 cm3 of 11%
Answer: A
Mathematics
You might also like to view...
Add or subtract as indicated. Simplify, if necessary.- 
+ 
A. - 
B. 
C. 
D. - 
Mathematics
Write the phrase as a variable expression. Use x to represent "a number."The difference of a number and 76
A. 76x B. 76 C. x - 76 D. 76 - x
Mathematics
Solve using matrices. 2x + y = 6 5x + 3y = 13
A. (5, -5) B. (-4, 5) C. (5, -4) D. (-4, -5)
Mathematics
Use the vertical line test to determine if the graph is a graph of a function.
A. Yes B. No
Mathematics