Identify the property illustrated by the statement. Assume all variables represent real numbers.6(?) is a real number.
A. Distributive
B. Associative
C. Identity
D. Closure
Answer: D
Mathematics
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Solve the problem.Find two complex numbers whose sum is 8 and whose product is 35.
A. 4 + 19i and 4 - 19i
B. 4 + 
i and 4 - 
i
C. 
+ 4i and 
- 4i
D. 4 + i
and 4 - i
Mathematics
Solve the system of equations using substitution.
A. x = 6, y = 7; x = 7, y = 6 or (6, 7), (7, 6) B. x = 6, y = -7; x = 7, y = -6 or (6, -7), (7, -6) C. x = -6, y = -7; x = -7, y = -6 or (-6, -7), (-7, -6) D. x = -6, y = 7; x = -7, y = 6 or (-6, 7), (-7, 6)
Mathematics
Find (i) the amplitude, (ii) the period, and (iii) the phase shift.y = - 
cos(2x - 2?)
A.
| (i) 2 | (ii) ? | (iii) ? |
B.
(i)  | (ii) ? | (iii)  |
C.
| (i) 2 | (ii) 2? | (iii) 2? |
D.
(i)  | (ii) ? | (iii) ? |
Mathematics
Find the square root. If it is not a real number, say so.- 
A. 
B. 
C. Not a real number
D. - 
Mathematics