Insert ? or ? in the blank to make the statement true.? 
?
A. ?
B. ?
Answer: A
Mathematics
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Perform the indicated row operations on the following matrix. 
(-2)R1 + R2 ? R2
A. 
B. 
C. 
D. 
Mathematics
Write the number in scientific notation.0.000000012406
A. 1.2406 × 108 B. 1.2406 × 10-8 C. 1.2406 × 10-9 D. 1.2406 × 10-7
Mathematics
Write with radicals. Assume that all variables represent positive real numbers.137/2
A. 
7
B. (
)7
C. 
D. 
2
Mathematics
Solve for the specified variable.
- 
+ 
= 5 for x
A. x = 
B. z = 
C. x = 
D. y = 
Mathematics