Simplify the rational expression. If the rational expression cannot be simplified, so state.
A. - 
B. - 
C. - 
D. 
Answer: B
Mathematics
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Determine whether the relation defines y as a function of x. Give the domain.y = x3
A. Function; domain: (-?, ?) B. Not a function; domain: (-?, ?) C. Function; domain: all whole numbers D. Not a function; domain: all whole numbers
Mathematics
Solve the problem.A triangular lake-front lot has a perimeter of 2000 feet. One side is 100 feet longer than the shortest side, while the third side is 400 feet longer than the shortest side. Find the lengths of all three sides.
A. 100 ft, 200 ft, 300 ft B. 500 ft, 600 ft, 900 ft C. 600 ft, 700 ft, 1000 ft D. 600 ft, 600 ft, 600 ft
Mathematics
Find the orthogonal projection of y onto u.y = 
, u = 
A. 
B. 
C. 
D. 
Mathematics
Give the exact value.sec 240°
A. - 
B. -2
C. 2
D. 
Mathematics