Use a graphing calculator to solve the system. Express solutions with approximations to the nearest thousandth.0.4x + 
y = 1 
x + 0.8y = 1
A. ?
B. {(0.176, 0.757)}
C. {(0.216, 0.646)}
D. {(0.097, 0.980)}
Answer: C
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Factor completely.m2n2 + 4mn - 12
A. (mn + 6)(mn - 2) B. (mn + 6m)(mn - 2n) C. (mn - 6n)(mn + 2m) D. (mn - 6)(mn + 2)
Which property or identity justifies the statement?If 
< 
, then 
+ 
< 
+ 
.
A. Trichotomy Identity B. Transitive Property C. Addition Property D. Density Property
Five players (A, B, C, D, and E) agree to divide a cake fairly using the lone divider method. The table below shows how each player values each of the five slices that have been cut by the divider.
Which of the following is a fair division of the cake?
A. A gets s4, B gets s2, C gets s1, D gets s3, E gets s5 B. A gets s3, B gets s2, C gets s1, D gets s4, E gets s5 C. A gets s4, B gets s5, C gets s1, D gets s3, E gets s2 D. All of these are fair divisions E. none of these
Perform the indicated operation and simplify if possible.
÷ 
A. 
B. 
C. 
D. 