Determine whether the given point is in the solution set to the given system.
9x - 9y - 6z = -116x + 3y - 3z = 1 x - y + 2z = -3
A. Yes
B. No
Answer: A
Mathematics
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Provide an appropriate response.Find the height of a tree that makes a 40-foot shadow when a 5 ft - 3 in. pole is used to make a shadow of 3 feet.
A. 70 feet B. 70.7 feet C. 42.8 feet D. 22.9 feet
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Simplify.- 
A. - 
B. - 
C. 
D. 
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Is the number 1,997 prime? ?
A. Prime B. Not prime
Mathematics
Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
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