Solve the equation by finding an expression for the determinant on the left, and then solving using the appropriate method.
= 4
A. {5}
B. {2}
C. ?
D. {-2}
Answer: D
Mathematics
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What will be an ideal response?
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An earthquake with a period of 
second has an amplitude of 4000µm. Find its measure on the Richter scale.
?
Please enter your answer as a number rounded to one decimal place.
Fill in the blank(s) with the appropriate word(s).
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Graph the line.
?
?
A. 
B. 
C. 
D. 
E. 
Mathematics