Solve.The number of centimeters, d, that a spring is compressed from its natural, uncompressed position is given by the formula 
where W is the number of joules of work done to move the spring and k is the spring constant. Solve this equation for W. Use the result to determine the work needed to move a spring 8 centimeters if it has a spring constant of 0.6.
A. W = 2d2k
B. W = 
C. W = 
D. W = 
Answer: C
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Convert 20 mL to cubic centimeters.
A. 200 cc B. 20,000 cc C. 0.02 cc D. 2 cc E. 20 cc
Find the vertices and locate the foci for the hyperbola whose equation is given.
- 
= 1
A. vertices: (-2, 0), (2, 0)
foci: (- 2
, 0), (2
, 0)
B. vertices: (-12, 0), (12, 0)
foci: (-2, 0), (2, 0)
C. vertices: (-12, 0), (12, 0)
foci: (- 2
, 0), (2
, 0)
D. vertices: (0, -12), (0, 12)
foci: (- 2
, 0), (2
, 0)
Solve.In a chemistry class, the following test scores were recorded for a student: 79, 76, 74, 73, 82, 78. Find the mean, median, and mode for the data.
A. mean: 76, median: none, mode: none B. mean: 78, median: none, mode: 82 C. mean: 77, median: 73, mode: 82 D. mean: 77, median: 77, mode: none
Solve the equation.
= 
A. 11
B. 
C. -4, 11
D. No solution