Find the vertices and the foci of the given ellipse.
+ 
= 1
A. V: (0, -9), (0, 9);
F: (0, -3), (0, 3)
B. V: (0, -3), (0, 3);
F: (0, - 
) and (0, 
)
C. V: (-3, 0), (3, 0)
F: (- 
, 0), (
, 0)
D. V: (0, 9), (4, 0);
F: (0, 3), (2, 0)
Answer: B
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The midpoints of the sides of rhombus ABCD are joined in order to form quadrilateral MNPQ. Being as specific as possible, what type of quadrilateral is MNPQ?
A. parallelogram B. rectangle C. square D. rhombus
Complete.54.72 mm = 
m
A. 54,720 B. 0.547 C. 5,472 D. 0.05472
Use an amortization table to find the value.
A. 0.09168 B. 0.08524 C. 0.09929 D. 0.08885
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: 40°; magnitude: 47 lb B. Direction: 4°; magnitude: 65 lb C. Direction: 51°; magnitude: 51 lb D. Direction: 29°; magnitude: 51 lb