Solve the equation.-75 + (-15) = 5x + x
A. 1
B. 80
C. -80
D. -15
Answer: D
Mathematics
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Calculate the circulation of the field F around the closed curve C.F = y2i + x3j; curve C is the counterclockwise path around the triangle with vertices at 
, and 
A. 
B. - 
C. 0
D. 
Mathematics
Find the directrices of the ellipse.16x2 + 4y2 = 64
A. y = ± 
B. x = ± 
C. x = ± 
D. y = ± 
Mathematics
Fill in the blank with the correct symbol <, >, or =, to make a true statement.-48 
30
A. > B. = C. <
Mathematics
For the given rectangular equation, write an equivalent polar equation.xy = 1
A. 2r sin ? cos ? = 1 B. r sin 2? = 2 C. 2r2sin ? cos ? = 1 D. r2sin 2? = 2
Mathematics