Simplify. Assume radicands of square roots are positive.
? 
A. 5
B. 25
C. 10
D. 
Answer: A
Mathematics
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Use scientific notation to perform the computation. Leave the answer in scientific notation.
A. -3.0 × 10-2 B. 3.0 × 10-2 C. -3.0 × 102 D. 3.0 × 102
Mathematics
Simplify. Assume that each variable is nonnegative.( 2 - 
)( 6 - 
)
A. 12 - 7
B. 12 - 8
+ x
C. 12 - 8
- x
D. 12 - 7x
Mathematics
Find all numbers that must be excluded from the domain of the rational expression.
A. x ? 
B. x ? 5, x ? -5
C. x ? 25
D. x ? 5
Mathematics
Provide an appropriate response.Express the sum using summation notation. Use 1 as the lower limit of summation and i for the index of summation. 
+ 
+ 
+ . . . + 
A. 
B. 
C. 
D. 
Mathematics