Find the unknown length in the right triangle. Simplify the answer if necessary.
A. 2
B. 
C. 
D. 2
Answer: D
Mathematics
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Evaluate the determinant by expansion by minors.
A. 5 B. -27 C. -23 D. 27
Mathematics
A pitching machine throws 70% strikes and 30% balls. Five pitches will be thrown by the machine.What is the probability that the first three balls thrown by the machine will be balls and that the last two thrown will be strikes?
A. 0.2 B. 0.3 × 0.7 C. 0.33 × 0.72 D. 3 × 0.3 + 2 × 0.7 E. none of these
Mathematics
Find the quotient.
÷ 
A. 
B. 
C. 
D. 
Mathematics
Use < or > for ? to write a true sentence. Draw a number line if necessary.109 ? 107
A. < B. >
Mathematics