Find the exact value under the given conditions.Given cos u = - 
, with u in quadrant II, and sin v = 
, with v in quadrant II. Find tan(u - v).
A. - 
B. 
C. 
D. - 
Answer: B
Mathematics
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Solve the problem.The function A described by A(r) = 4?r2 gives the surface area of a sphere with radius r. Find the area when the radius is 4 in. Round your answer to two decimal places.
A. 50.27 in.2 B. 201.06 in.2 C. 64 in.2 D. 150.8 in.2
Mathematics
Provide an appropriate response.One way to determine if two fractions are equivalent is to use 
.
A. common factors B. equivalent terms C. simplification D. the method of prime factors
Mathematics
Solve the system of equations by Gauss-Jordan elimination.
A. {(9, 3, 3)} B. {(12, 6, 0)} C. {(18, 12, -6)} D. ?
Mathematics
Write the system of equations associated with the augmented matrix. Do not solve.
A. 9x + 4y + 8z = -2
| 6x | + 7z = | 4 |
| 5x + 2y | = | 2 |
B. 5x + 6y + 9z = -2
| 2x | + 4z = 4 |
| 7y + 8z | = 2 |
C. 9x + 4y + 8z = -2
| 6x | + 7z = 4 |
| 5x | + 2z = 2 |
D. 9x - 4y + 8z = -2
| 6x | + 7z = -4 |
| 5x + 2y | = -2 |
Mathematics