Find the exact value of the expression using the provided information.Find cos(A + B) given that sin A = - , with A in quadrant IV, and  with B in quadrant IV.

A.
B.
C.
D.


Answer: A

Mathematics

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Solve the problem.A car on a test track described by x = 0.40t3, y = 19t - 1.7t2, where x and y are measured in meters and t is in seconds. Find the acceleration of the car at 

A. 5.1 m/s2, 340.5° B. 10 m/s2, 340.5° C. 10 m/s2, 160.5° D. 5.1 m/s2, 160.5°

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Solve.A salesperson earned $350 a week plus a bonus of $19 for each service contract sold. If the pay one week was $502 how many service contracts were sold?

A. 5 contracts B. 18 contracts C. 2 contracts D. 8 contracts

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Complete the table of values for the given equation.y = -x + 3

A. -1; 3; 0 B. -1; 3; 4 C. -1; 4; 3 D. -1; -3; 0

Mathematics

Write the number in scientific notation.3,127

A. 3.127 × 101 B. 3.127 × 104 C. 3.127 × 10-3 D. 3.127 × 103

Mathematics