Use Gaussian elimination or Gauss-Jordan elimination to solve the problem.Anne and Nancy use a metal alloy that is 14.2% copper to make jewelry. How many ounces of a 10% alloy must be mixed with a 17% alloy to form 85 ounces of the desired alloy?
A. 56 oz
B. 51 oz
C. 36 oz
D. 34 oz
Answer: D
Mathematics
You might also like to view...
Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (-1, 1) for 5x - 
+ 6x2y2 = 0.
A. 
B. - 
C. 
D. - 
Mathematics
Solve the equation. 
= 9
A. -9 B. 9 C. -9, 9 D. 81
Mathematics
Solve the given equation or inequality. If an equation is given, then write the solution set in set notation. If an inequality is given, then write the solution set in interval notation.
- 4 = 12
A. {9} B. {9, -23} C. {11, 22} D. {16, -16}
Mathematics
Identify the property illustrated by the statement. Assume all variables represent real numbers.4 + (-4) = 0
A. Associative B. Closure C. Identity D. Inverse
Mathematics