Solve the problem using the vector form v = 
[(cos ?)i + (sin ?)j].A box weighing 68 lb is hanging from the end of a rope. The box is pulled sideways by a horizontal rope with a force of 27 lb. What angle, to the nearest degree, does the first rope make with the vertical?
A. 44°
B. 33°
C. 11°
D. 22°
Answer: D
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Use a calculator to find the approximate value of the expression. Round the answer to two decimal places.sec 
A. 1.11 B. 1.04 C. 0.93 D. 1.00
Answer the question.True or False: The graph of the equation 9x - 15y = 30 goes through 
A. False B. True
Write a system of linear equations in three variables, and then use matrices to solve the system.The table below shows the number of birds for three selected years after an endangered species protection program was started.
Use the quadratic function y = ax2 + bx + c to model the data. Solve the system of linear equations involving a, b, and c using matrices. Find the equation that models the data.
A. y = 3x2 + 10x + 29 B. y = 6x2 - 30x + 25 C. y = 4x2 + 20x + 24 D. y = 5x2 - 10x + 32
Write the number without exponents.8.42 × 100
A. 0.842 B. 0 C. 842 D. 8.42