Use the Gauss-Jordan method to find A-1, if it exists.A = 
A. 
B. 
C. 
D. Does not exist
Answer: D
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Find the volume of the rectangular solid.
A. V = 1695.6 in.3 B. V = 282.6 in.3 C. V = 1903.8 in.3 D. V = 94.2 in.3
Use the quadratic formula to solve the given equation.6x2 + 8x + 1 = 0
A. 
B. 
C. 
D. 
Solve the problem.To convert a temperature C given in degrees Celsius to an equivalent temperature F in degrees Fahrenheit, use the formula F = 
+ 32. Find the Fahrenheit temperature that is equivalent to a temperature of 
A. 473°F B. 409°F C. 119°F D. 155°F
Mark as true any statement that is always true. Mark as false any statement that is never true or that is not necessarily true. Be able to justify your answers.
1. If a statement is true then its contrapositive must also be true. 2. If p ? q and q ? r then r ? p. 3. The statement “if p then q” can be read as “q only if p.” 4. If a statement is false, then its converse must also be false. 5. If ?MAD ? ?ROC, then ?DMA ? ?ORC. 6. If two triangles are congruent, then there are exactly three pairs congruent parts—the corresponding angle pairs. 7. In ABC, if AB ? BC then ?BAC ? ?ACB. 8. If AB ? XY , BC ? YZ and ?ABC ? ?XYZ then ?ABC ? ?XYZ 9. In ABC, ABC CBA by corresponding parts (C.P.) 10. If PQ bisects AB, then AP ? BP. 11. To construct a copy of AB, we begin by drawing a new line. 12. The construction of a perpendicular bisector of a segment requires three arcs and one line. 13. The construction of the bisector of an angle requires three arcs and one line.