Express the number in terms of j.
A. - n2
B. n2j
C. -n2j
D. n2
Answer: B
Mathematics
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Divide and express the result in standard form.
A. - 
+ 
i
B. 
+ 
i
C. 
- 
i
D. 
+ 
i
Mathematics
Multiply and simplify.
? 
A. 
B. 
C. - 
D. - 
Mathematics
Solve the problem.The pH of a chemical solution is given by the formula pH = -log10[H+] where [H+] is the concentration of hydrogen ions in moles per liter. Find the pH if the [H+] = 5.2 × 10-4.
A. 4.28 B. 4.72 C. 3.28 D. 3.72
Mathematics
Find the average rate of change illustrated in the graph.
Time (in hours)
A. 5 miles per hour B. 25 miles per hour C. .2 miles per hour D. 2.5 miles per hour
Mathematics