Provide an appropriate response.The half-life of a drug in the bloodstream is 9 hours. By what factor does the concentration of the drug decrease in 13 hours?
A. 0.05
B. 0.14
C. 2.72
D. 0.37
Answer: D
Mathematics
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Find ? for 0° ? ? < 360°.csc ? = -3.200
A. 198.21°, 341.79° B. 18.21°, 341.79° C. 522.65°, 17.35° D. 198.21°, 288.21°
Mathematics
In the circuit below, IT = 25 /-30è mA. What is IL and Z when E = 6 V?
a. IL = 8.7 mA, Z = 407 ê b. IL = 16.9 mA, Z = 317 ê c. IL = 14.4 mA, Z = 300 ê d. IL = 12.5 mA, Z = 240 ê e. IL = 21.7 mA, Z = 150 ê
Mathematics
Write the expression in the form a + bi.
A. 
+ 
i
B. - 
+ 
i
C. 
+ 
i
D. 
- 
i
Mathematics
Solve the problem.A number increased from 2254 to 9746 . Find the amount of increase.
A. 7492 B. 7484 C. 9492 D. 7404
Mathematics