Solve.The speed of a stream is 4 mph. If a boat travels 78 miles downstream in the same time that it takes to travel 39 miles upstream, what is the speed of the boat in still water?
A. 12 mph
B. 8 mph
C. 14 mph
D. 15 mph
Answer: A
Mathematics
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Find the flux of the curl of field F through the shell S.F = -5x2yi + 5xy2j + z5k; S is the portion of the paraboloid 2 - x2 - y2 = z that lies above the 
A. 80
B. 
?
C. 80?
D. 10?
Mathematics
Answer the question.Consider the numbers 12, 
, -22, 0, 
, 
, 
. Which are integers?
A. 12, 0
B. 12, 0, 
C. 12, -22, 0
D. 12, -22, 0, 
, 
Mathematics
Choose the best estimate for the sum or difference.16
- 1
A. 20 B. 15 C. 16 D. 14
Mathematics
Write in exponent form.7 ? 7 ? 7 ? y ? y ? y ? z ? z
A. 37y3z2 B. 73y3z2 C. 73y2z3 D. 72y3z2
Mathematics