Solve the proportion. = 

A. {12}
B.
C. {9}
D.


Answer: C

Mathematics

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In a proportionality relationship, the  constant ofproportionality  varies with time.

Answer the following statement true (T) or false (F)

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Perform the indicated operations. Write the result in the form a + bj.4j3 - 4

A. -16j B. -24j C. 16j D. 24j

Mathematics

The position vector of a particle is r(t). Find the requested vector.The velocity at t = 1 for r(t) = (6 - 3t2)i  + (7t + 4)j - e-5tk

A. v(1) = -6i + 7j - 5e-5k B. v(1) = -6i + 7j + 5e-5k C. v(1) = -3i +7j + 5e-5k D. v(1) = 6i + 7j + 5e-5k

Mathematics

Solve the problem.Find the value of a retirement savings account paying an APR of 5.4% (compounded monthly) after 45 years of monthly contributions (contributions made at the end of each month, including the last month) when the monthly contribution is $140. Round your answer to the nearest cent.

A. $300,587.01 B. $320,355.20 C. $330,340.24 D. $301,919.70 E. $339,811.23

Mathematics