Solve the system using the addition method. If the system is inconsistent and has no solution, state this. If the system is dependent, write the form of the solution for any real number x.y - 1.1x = -4.2y - 0.7x = -2.92
A. (-0.68, -2.92)
B. (-3.2, -0.68)
C. Inconsistent, ?
D. (3.2, -0.68)
Answer: D
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What will be an ideal response?
Solve the radical equation. Check all proposed solutions.
= 3
A. x = - 1
B. x = - 
C. x = - 
D. no solution
Find all numbers a such that the given point is on the circle x2 + y2 = 1.
A. a = ± 
B. a = ± 
C. a = ± 
D. a = ± 
Find the exact value of the indicated trigonometric function of ?, if ? is an angle in standard position whose terminal side contains the given point.
; find sin ? and cos ?.
A. sin ? = - 
, cos ? = 
B. sin ? = - 
, cos ? = - 
C. sin ? = 
, cos ? = - 
D. sin ? = 
, cos ? = - 