Use Gaussian elimination or Gauss-Jordan elimination to solve the problem.Ellen wishes to mix candy worth $4.68 per pound with candy worth $8.89 per pound to form 23 pounds of a mixture worth $7.61 per pound. How many pounds of the more expensive candy should she use?
A. 21 lb
B. 7 lb
C. 9 lb
D. 16 lb
Answer: D
Mathematics
You might also like to view...
Find the exact value of the product.sin
cos
A. 
B. 
C. - 
D. 
Mathematics
Use De Moivre's theorem to simplify the expression. Write the answer in a + bi form.(-5
+ 5i
)3
A. 5
+ 5i
B. 500
+ 500i
C. 50
+ 50i
D. 15
+ 15i
Mathematics
Solve the inequality by the test-point method. Write the solution in interval notation.(x + 10)(x + 7)(x - 10) < 0
A. (-10, -7) ? (10, ?) B. (-?, -7) C. (10, ?) D. (-?, -10) ? (-7, 10)
Mathematics
Find two functions defined implicitly by the given relation.x2 + y2 = 64
A. y = 
+ x or y = - 
- x
B. y = 
or y = - 
C. y = 
or y = 
D. y = 
+ x or y = 
- x
Mathematics