Estimate the product by rounding as indicated.(0.034)(381.9); Round each factor to one nonzero digit.
A. 1200
B. 12
C. 120
D. 1.2
Answer: B
Mathematics
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Simplify.
A. 
B. ab
C. 
D. 
Mathematics
Solve the problem.An airplane flies 420 miles with the wind and 320 against the wind in the same length of time. If the speed of the wind is 40 mph, what is the speed of the airplane in still air?
A. 296 mph B. 286 mph C. 128 mph D. 301 mph
Mathematics
Provide an appropriate response.Why should you simplify each term in a radical expression before attempting to collect like radical terms?
What will be an ideal response?
Mathematics
Solve the problem.Two times the reciprocal of a number equals 40 times the reciprocal of 50. Find the number.
A. 
B. 
C. 12
D. 100
Mathematics