Find the sum or difference. Write the answer in standard form.(2 + 6i) - (-8 - 6i) + (8 + 8i)
A. 18 + 20i
B. 2 + 8i
C. -18 + 4i
D. 18 + 8i
Answer: A
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Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Provide an appropriate response.Change 
to an improper fraction.
A. 
B. 
C. 
D. 
The primary purpose of a lockbox arrangement is to:
A. provide for the safe-keeping of the firm's marketable securities. B. identify inventory safety stocks. C. slow down (delay) cash disbursements to the firm's customers. D. speed up a firm's collections on checks received from customers. E. speed up a firm's disbursement of checks to its suppliers.
Find the constants m and b in the linear function 
, so that 
and 
style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_d07cbac72b7a411cbb03e7251" />. ? A. m = 3 and b = 2 B. m = 3 and b = 3 C. m = 2 and b = -4 D. m = -4 and b = 2 E. m = 3 and b = -4