Solve.Erika spent 
hr on her computer visiting the History Channel and the Discovery Channel websites. She spent 
hr at the History Channel website. How many hours did she spend at the Discovery Channel website?
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: A
Mathematics
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Using Green's Theorem, find the outward flux of F across the closed curve C.F = xyi + xj; C is the triangle with vertices at (0, 0), (4, 0), and (0, 4)
A. - 
B. 0
C. 
D. 
Mathematics
Find an equation for the line with the given properties.Perpendicular to the line y = -9; containing the point (5, 4)
A. y = 5 B. y = 4 C. x = 5 D. x = 4
Mathematics
Use your calculator to find sin ? and cos ? if the point 
is on the terminal side of ?.
?
sin ? = __________
?
cos ? = __________
What will be an ideal response?
Mathematics
Perform the indicated operations.(x3 + 5xy - 7y2) - (8x3 + 7xy + y2)
A. 9x3 - 2xy - 8y2 B. -7x3 - 2xy - 6y2 C. 7x3 + 2xy - 6y2 D. -7x3 - 2xy - 8y2
Mathematics