For the following amicable pair, determine whether neither, one, or both of the members are happy, and whether the pair is a happy amicable pair.66,928 and 66,992
A. one; happy
B. both; happy
C. one; not happy
D. neither; not happy
Answer: D
Mathematics
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The equation gives the position s = f(t) of a body moving on a coordinate line (s in meters, t in seconds).s = 5 sin t - cos tFind the body's jerk at time t = ?/4 sec.
A. - 2
m/sec3
B. 3
m/sec3
C. - 3
m/sec3
D. 2
m/sec3
Mathematics
Solve the problem.Suppose that the dollar cost of producing x radios is 
Find the marginal cost when 45 radios are produced.
A. -$895 B. $895 C. $38 D. $2
Mathematics
Verify the identity.cos 
= -sin x
What will be an ideal response?
Mathematics
Find the direction angles of the vector. Round to the nearest degree, if necessary.v = -4i - 12j - 6k
A. ? = 91°, ? = 94°, ? = 92° B. ? = 108°, ? = 161°, ? = 118° C. ? = 108°, ? = 157°, ? = 117° D. ? = 107°, ? = 149°, ? = 115°
Mathematics