Simplify the expression using multiplication.
(10x + 5y - 9z + 
)
A. 
x + 
y - 
z + 
B. 
x + 
y - 
z + 
C. 
D. 
x + 
y - 
z + 
Answer: A
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and 
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Determine the number of significant digits in the given approximate number.705.050
A. 2 B. 3 C. 6 D. 4
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A. 
B. 
C. 
D. 
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