Use a truth table to determine whether the symbolic form of the argument is valid or invalid.(~p ? q) ? (q ? r)~q ? r ? p ? q
A. Valid
B. Invalid
Answer: B
Mathematics
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Solve the equation using the square root property.(x + 6)2 - 4 = 0
A. {- 4} B. {-8} C. {-2, 2} D. {-8, - 4}
Mathematics
Insert the number that gives the desired result.t + 7 + ____ = t
A. 14 B. -14 C. 7 D. -7
Mathematics
Decide whether the relation defines a function.4x = 11 - 4y
A. Not a function B. Function
Mathematics
Solve triangle, if possible. Round angles an side lengths to the nearest tenth when necessary. 
A. a ? 3, B = 30°, C = 90° B. a ? 3.5, B = 35°, C = 85° C. a ? 3.8, B = 28°, C = 92° D. a ? 3.5, B = 30°, C = 90°
Mathematics