Simplify the expression.
(
- 
)
A. 25 - 5
B. 55
C. 5
- 20
D. 15
Answer: D
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Provide an appropriate response.The unit vectors u and v are combined to produce two new vectors 
and 
Show that a and b are orthogonal. Assume 
What will be an ideal response?
Use percents, percent equations, and/or percent proportions to solve the application.A course syllabus states that Test 1 will have a total of 50 points. If a student earns 38 points, what is the student's grade for this test?
A. 76% B. 73% C. 24% D. 27%
Perform the indicated operation. 
- 
A. 
B. - 
C. - 
D. 
Solve the problem.A dietitian needs to purchase food for patients. She can purchase an ounce of chicken for $0.25 and an ounce of potatoes for $0.02. The dietician is bound by the following constraints.? Each ounce of chicken contains 13 grams of protein and 24 grams of carbohydrates.? Each ounce of potatoes contains 5 grams of protein and 35 grams of carbohydrates.? The minimum daily requirements for the patients under the dietitian's care are 45 grams of protein and 58 grams of carbohydrates. Let x = the number of ounces of chicken and 
number of ounces of potatoes purchased per patient. Write a system of inequalities that describes these constraints.
A. 
B. 
C. 
D. 
