An arithmetic sequence is given. Find the common difference and write out the first four terms.{9 - 4n}
A. d = -4; 5, 1, -3, -7
B. d = 4; 5, 9 , 13 , 17
C. d = -4; -4, -8, -12, -16
D. d = -4; 5, 3 , -1 , -5
Answer: A
Mathematics
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In the circuit below, R1 = 3.3 Kê, R2 = 5.6 Kê, R3 = 4.7 Kê, and C = 846 pF. What is IC of an equivalent Norton circuit when f = fCO?
a. 4.5 mA
b. 10.7 mA
c. 1.9 mA
d. 2.7 mA
e. 1.8 mA
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? 
÷ 
A. 
B. 
C. 1
D. 
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Use a half-angle formula to find the exact value of the expression.sin 165°
A. 
B. - 
C. - 
D. 
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