Find the slope of the line if it exists.
A. 7
B. 0
C. 2
D. undefined slope
Answer: B
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The position vector of a particle is r(t). Find the requested vector.The acceleration at t = 1 for r(t) = (9t - 2t4)i + (6 - t)j + (3t2 - 5t)k
A. a(1) = -24i - j + 6k B. a(1) = -6i + 6k C. a(1) = 24i + 6k D. a(1) = -24i + 6k
Solve the problem.In 1996, an outbreak of a disease infected 14 people in a large community. By 1997, the number of those infected had grown to 33. Find an exponential growth function that fits the data. (Round decimals to three places.)
A. N(t) = 14e0.857t, where t is the number of years after 1997. B. N(t) = 14e8.57t, where t is the number of years after 1996. C. N(t) = 14e0.857t, where t is the number of years after 1996. D. N(t) = 14e8.57t, where t is the number of years after 1997.
Write the number in scientific notation.One centimeter is equal to 0.00001 kilometers.
A. 1 × 10-4 B. 1 × 10-5 C. 1 × 105 D. 1 × 10-6
Determine the standard equation of the ellipse described.Vertices at (-6, 4) and (10, 4); focus at (8, 4).
A. 
+ 
= 1
B. 
- 
= 1
C. 
+ 
= 1
D. 
+ 
= 1