Use properties to perform the calculations. Express answer in simplest form.10 ? 
- 
? 
A. -1
B. 
C. 
D. 
Answer: B
Mathematics
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Perform the indicated operation without the use of a calculator and express each answer in scientific notation.
A. 4 × 10-1 B. 4 × 101 C. 4 × 1015 D. 4 × 10-15
Mathematics
Write the percent as a decimal.41%
A. 0.041 B. 4.1 C. 0.41 D. 0.3
Mathematics
Write the mixed number as an improper fraction.18
A. 
B. 
C. 
D. 
Mathematics
Use Gaussian elimination to find the complete solution to the system of equations, or state that none exists.x + y + z=92x - 3y + 4z=7x - 4y + 3z=-2
A. {(- 
+ 
, 
- 
, z)}
B. {(
+ 
, 
- 
, z)}
C. {(
+ 
, 
+ 
, z)}
D. {(- 
+ 
, 
+ 
, z)}
Mathematics