Use the properties of determinants to find the value of the second determinant, given the value of the first.
= 23
= ?
A. 69
B. -69
C. 23
D. -23
Answer: A
Mathematics
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Solve the problem.An exam is given to the sixth graders at Emerson School and Lincoln School. 
of the students at Emerson School and 90% of the students at Lincoln School passed the exam. Which school had the better result?
A. Emerson School B. Lincoln School
Mathematics
Determine whether (A?B)?C = A?(B?C) for all sets A, B, and C.
a. Yes, by the Commutative property of intersection. b. Yes, by the Associative property of intersection. c. Yes, by the Associative property of union. d. No, (A?B)?C?A?(B?C)
Mathematics
Solve.0.05(400 + x) - 0.07x = 0.035(400)
A. {310} B. {290} C. {300} D. {150}
Mathematics
Perform the indicated operation. Write the answer in scientific notation.
A. 2.6 × 10-6 B. 2.6 × 10-22 C. 6.6 × 1012 D. 2.6 × 1012
Mathematics