Solve the equation.
- 
= 
A. {7}
B. {31}
C. {-7}
D. ?
Answer: A
Mathematics
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Provide an appropriate response. If you know the total length of a fence and the width of each board used to build the fence, what operation would you use to determine the number of boards needed for the fence?
A. subtraction B. addition C. division D. multiplication
Mathematics
Factor completely.x4 + x3y - 27x - 27y
A. (x + 3)(x2 - 3x + 9)(x - y) B. (x + 3)(x2 - 3x + 9)(x + y) C. (x - 3)(x2 + 3x + 9)(x + y) D. (x - 27)(x3 + x + y)
Mathematics
Perform the indicated operation. Simplify the result.
- 
A. 
B. 
C. 
D. 
Mathematics
What is the degree of the expression?(x9 + 7)7
A. 7 B. 63 C. 9 D. 16
Mathematics