Solve the equation.
= 
A. 
B. 20
C. 
D. 
Answer: D
Mathematics
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Find the exact value of the expression without using a calculator.sin 
cos 
- cos 
sin 
A. 1
B. 
C. 
D. 
Mathematics
Find the ordered pair for the vertex.f(x) = x2 - 14x + 54
A. (0, 7) B. (5, 7) C. (7, 5) D. (5, 0)
Mathematics
Solve the problem.In flying the 85 miles from Champaign to Peoria, a student pilot sets a heading that is 11° off course and maintains an average speed of 132 miles per hour. After 15 minutes, the instructor notices the course error and tells the student to correct his heading. Through what angle will the plane move to correct the heading and how many miles away is Peoria when the plane turns?
A. 17.8°; 74.57 mi B. 162.2°; 52.98 mi C. 162.2°; 74.57 mi D. 17.8°; 52.98 mi
Mathematics
Solve for x and y in the two-compartment model.
Mathematics