Add or subtract. Express the answer as a mixed number.17
- 9
A. 7
B. 6
C. 8
D. 7
Answer: A
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Express the given complex number in polar form.0.800e1.00j
A. 1.00 ( cos 45.8° + j sin 45.8°) B. 1.00 ( cos 57.3° + j sin 57.3°) C. 0.800 ( cos 57.3° + j sin 57.3°) D. 0.800 ( cos 45.8° + j sin 45.8°)
Find the exact value of the expression.
A. - 
B. - 
C. -2
D. -
Solve the problem.The gravitational attraction A between two masses varies inversely as the square of the distance between them. The force of attraction is 4 lb when the masses are 3 ft apart, what is the attraction when the masses are 6 ft apart?
A. 1 lb B. 3 lb C. 2 lb D. 4 lb
Solve the problem.The population of a particular city is increasing at a rate proportional to its size. It follows the function 
where k is a constant and t is the time in years. If the current population is 50,000, in how many years is the population expected to be 125,000? (Round to the nearest year.)
A. 10 yr B. 13 yr C. 23 yr D. 153 yr