Solve the problem.Two forces of magnitude 25 pounds and 40 pounds act on an object. The force of 40 lb acts along the positive x-axis, and the force of 25 lb acts at an angle of 80° with the positive x-axis. Find the direction and magnitude of the resultant force. Round the direction and magnitude to the nearest whole number.
A. Direction: 29°; magnitude: 51 lb
B. Direction: 40°; magnitude: 47 lb
C. Direction: 4°; magnitude: 65 lb
D. Direction: 51°; magnitude: 51 lb
Answer: A
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An experiment consists of selecting a card from a standard deck of playing cards and noting whether the card is black (B) or red (R). Describe an appropriate sample space for this experiment. ?
A. {BR, RB} B. {R, R} C. {R, B, B, R} D. {B, R} E. {B, B}
Solve the problem.At a track meet, Russell ran the first heat of the 100-yd dash in 14.5 sec, Sergy in 14.8 sec, and Omar in 15.2 sec. In the second heat, they got 14.3 sec, 14.4 sec, and 14.7 sec. Write a 1 x 3 matrix giving the changes in times. If the changes repeat, who will win?
A. 
, Omar
B.
[0.2 0.4 0.5], Sergy
C.
[-0.2 -0.4 -0.5], Sergy
D.
[-0.2 -0.4 -0.5], Russell
Complete the horizontal analysis for the balance sheet. Round to the nearest tenth of a percent.
A. 39.1%, 28.4%, 8.4%, 25.0%, 20.7%, 32.4%, 22.0% B. 71.9%, 77.8%, 92.2%, 80.0%, 82.9%, 75.5%, 81.9% C. 28.1%, 22.2%, 7.8%, 20.0%, 17.1%, 24.5%, 18.1% D. 39.0%, 28.6%, 8.4%, 25.0%, 20.7%, 32.4%, 22.1%
Find the limit of the sequence if it converges; otherwise indicate divergence.an = (-1)n 
A. 1 B. 0 C. 8 D. Diverges