Rewrite each number using scientific notation before performing the operation. Leave your answer in scientific notation form.(80,000)(900)
A. 7.2 × 109
B. 7.2 × 106
C. 7.2 × 107
D. 7.2 × 108
Answer: C
Mathematics
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Find the exact value of y, or state that y is undefined.y = tan-10
A. ?
B. 2?
C. 0
D. 
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Simplify the expression involving rational exponents.- 
1/2
A. Not a real number
B. - 
C. 
D. - 
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The graph of a function f is given. Use the graph to answer the question.Is f(20) positive or negative?
A. positive B. negative
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