Plot the complex number.7 + 
i
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Evaluate the expression.
1/2
A. 
B. 
C. not a real number
D. 
Mathematics
Find a basis for the column space of the matrix.Let A = 
and B = 
.It can be shown that matrix A is row equivalent to matrix B. Find a basis for Col A.
A. 
, 
, 
B. 
, 
, 
C. 
, 
, 
D. 
, 
, 
, 
, 
Mathematics
Evaluate the formula for the given quantity.d = rt; given r = 56 miles per hour, t = 3 hours
A. d = 168 miles
B. d = 336 miles
C. d = 59 miles
D. d = 
miles
Mathematics
Determine whether the matrix is in row-echelon form. If it is, then determine also whether it is in reduced row-echelon form.
A. Yes; yes B. Yes; no C. No
Mathematics