Solve.|a - 1| = |a - 3|

A.
B.
C. {4}
D. ?


Answer: B

Mathematics

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A rectangular plot measures 17 meters by 22 meters. Find the distance, to the nearest meter, from one corner of the plot to the diagonally opposite corner. Express your answer to the nearest meter. 

A. 300 meters B. 28 meters C. 39 meters D. 15 meters E. 14 meters

Mathematics

Write the number in scientific notation. ? One micron (millionth of a meter): 0.00001937 inch. ?

A. 1.937 × 102 in B. 0.00001937 × 104 in C. 1.937 × 10-5 in D. 1.937 × 103 in E. 1.937 × 10-4 in

Mathematics

Express as a single logarithm and, if possible, simplify.ln x - ln 4

A. ln
B. ln 
C. ln( - 4)
D. ln

Mathematics

Determine the value of the indicated function in the given manner.Find cos 90° by using the functions of 45°.

A. 0 B. 1 C. - 1 D. undefined

Mathematics