Solve for the indicated variable.R = nE - nr, for n
A. n = 
B. n = 
C. n = R - E + r
D. n = R + nr - E
Answer: B
Mathematics
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Solve the problem.The length of a rectangular frame is 3 cm more than the width. The area inside the frame is 154 square cm. Find the width of the frame.
A. 17 cm B. 14 cm C. 12 cm D. 11 cm
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Use graphical methods to find any turning points of the graph of the function.y = 
A. 
and 
B. No turning points
C. 
and 
D. (0, 3) and 
Mathematics
Solve the logarithmic equation symbolically.ln 3x + ln 6x = ln 19
A. x = 
1/2
B. x = 0
C. x = 
D. x = 1
Mathematics
Write the expression in the standard form a + bi.
A. i B. 1 C. -1 D. -i
Mathematics