Round the number to the specified place.6787 to the nearest ten
A. 6790
B. 6780
C. 6800
D. 6890
Answer: A
Mathematics
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Find the flux of the curl of field F through the shell S.F = (5y + 5)i - 4xj + (ez - 5)k; S: r(r, ?) = 4 sin ? cos ?i + 4 sin ? sin ?j + 4 cos ?k, 0 ? ? ? 2? and 0 ? ? ? 
A. -144? B. -288? C. 144? D. 288
Mathematics
Find the vertices and foci of the ellipse.9x2 + 25y2 = 225
A. Vertices: (0, ±5); Foci: (0, ±4) B. Vertices: (0, ±9); Foci: (0, ±5) C. Vertices: (±5, 0); Foci: (±4, 0) D. Vertices: (±9, 0); Foci: (±4, 0)
Mathematics
Simplify the expression.(-8)4/3
A. 64 B. 16 C. not a real number D. -16
Mathematics
Solve.A car rental company charges $20 per day and $0.50 per mile to rent a car. What is the total bill if a car is rented for 2 days and is driven 143 miles?
A. -$31.50 B. $41 C. $2931.5 D. $111.50
Mathematics