True or false:
True
Mathematics
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Perform the indicated operation. Write the result in standard form.(7 - 5i) + (4 - 2i)
A. 11 - 3i B. 11 - 7i C. -11 - 7i D. 11 + 7i
Mathematics
Find R(x) = f(x) ? g(x) and state its domain.f(x) = 
, g(x) = 
A. 
; {x|x ? -9, -6, - 15}
B. 
; {x|x ? - 15}
C. 
; {x|x ? - 15}
D. 
; {x|x ? -9, -6, - 15}
Mathematics
Find the derivative of the function at the given value of x using a graphing utility. If necessary, round to four decimal places.f(x) = x sin(9x); x = 7
A. 1171.4513 B. 62.2780 C. -1171.4513 D. 62.1018
Mathematics
Find the perimeter of the figure.
A. 72 mi B. 55 mi C. 110 mi D. not enough information given
Mathematics