Determine whether the given ordered pair is a solution of the system.(1, -6)3x + y = 94x + 3y = 22
A. not a solution
B. solution
Answer: A
Mathematics
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Determine whether the set is well defined or not.{x : x is a tennis player who has won at Wimbledon}
A. Well defined B. Not well defined
Mathematics
Use the even-odd properties to find the exact value of the expression. Do not use a calculator.cos 
A. - 
B. - 
C. 
D. 
Mathematics
Simplify the expression. Assume that all variables are positive.
A. x10
B. 
C. 
D. 
Mathematics
Answer as indicated in a complete sentence.Four years ago, John planted a tree in his garden. It was 6 feet 6 inches tall. Since then the tree has grown 4 feet 11 inches. How tall is the tree now?
A. The tree is now 11 feet 5 inches tall. B. The tree is now 10 feet 17 inches tall. C. The tree is now 11 feet 7 inches tall. D. The tree is now 10 feet 5 inches tall.
Mathematics