Provide an appropriate response.The set of rational numbers is the set of all numbers which can be expressed in the form 
, where a and b are integers and 
is not equal to 0.
A. 
; b
B. a ? b; a
C. 
; a
D. a ? b; b
Answer: A
Mathematics
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Multiply.
2
A. 
x2 + 2x + 121
B. 
x2 - 2x + 121
C. 121x2 + 2x
D. 121x2 - 
x - 
Mathematics
Solve the problem.The product of a number and 9 less than the number is -20. What is the number?
A. 5 or 6 B. 4 or 5 C. -5 or -4 D. -6 or -5
Mathematics
Provide an appropriate response.When using sum-of-the-years-digits method, the first year's depreciation should be the:
A. smallest B. same as any other year C. largest D. cost times a fraction
Mathematics
Find the sum or difference. Write the answer in lowest terms.
- 
A. 
B. 
C. 9
D. 
Mathematics