Simplify. Assume all variables and radicands represent nonnegative real numbers.Rationalize the denominator: 
A. 
+ 9
B. 
C. 
+ 9
D. 
Answer: A
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Provide an appropriate response. A denominator of a fraction is 36 and the numerator is 15. Which of the following best describes the fraction?
A.
The item represented by the fraction is divided into 36 equal parts.
B.
The fraction is best described as an improper fraction.
C.
The fraction can be written as 
.
D.
When written as a fraction the fraction is in lowest terms.
Write the inequality in interval notation.7 > x ? -5
A. (-5, 7) B. [-5, 7) C. [-5, 7] D. (-5, 7]
Perform the indicated operation. Express the answer in scientific notation.
A. 10 × 10-8 B. 5 × 10-4 C. 5 × 10-8 D. 10 × 10-4
Solve by eliminating variables using the addition method.
A. no solution or ? B. {(3, -3, 2)} C. {(2, -3, 3)} D. infinitely many solutions; dependent equations