Solve the problem.The sum of a number and 8 times its reciprocal is 6. Find the number.
A. 4
B. 5
C. 2 or 4
D. 2
Answer: C
Mathematics
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The position vector of a particle is r(t). Find the requested vector.The velocity at t = 
for r(t) = 2sec2(t)i - 4tan(t)j + 7t2k
A. v
= -8j - 
?k
B. v
= -8j + 
?k
C. v
= 8i - 8j + 
?k
D. v
= 8i + 8j - 
?k
Mathematics
Find 
. Express the answer in standard form.z1 = 5(cos 200° + i sin 200°)z2 = 4(cos 50° + i sin 50°)
A. -10 + 10i
B. - 
+ 
i
C. -2 + 2i
D. - 
+ 
i
Mathematics
Complete the table of values for the given equation.y = -5
A. 0; 0; 0 B. 0; 2; 4 C. 3; 3; 3 D. -5; -5; -5
Mathematics
Find the standard form of the equation of the ellipse satisfying the given conditions.Center at (0, 0); Focus at (0, 6); Vertex at (0, 7)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics