Find an equation of variation in which y varies inversely as x and the following is true.y = 47, when x = 25
A. y = 
B. y = 1175x
C. y = 1.88x
D. y = 
Answer: D
Mathematics
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Write the complex number in polar form. Express the argument in degrees, rounded to the nearest tenth, if necessary.-2i
A. 2(cos 90° + i sin 90°) B. 2(cos 0° + i sin 0°) C. 2(cos 270° + i sin 270°) D. 2(cos 180° + i sin 180°)
Mathematics
Find the exact circular function value.sec 
A. 
B. -2
C. - 
D. - 
Mathematics
Find a general term an for the arithmetic sequence.a1 = 0.55, d = 0.05
A. an = 0.55 + 0.05n B. an = 0.1n + 0.5 C. an = 0.05n + 0.5 D. an = 0.1n + 1
Mathematics
Find the standard form of the equation for the ellipse satisfying the given conditions. Center (0, 0); vertices (0, ±6); c = 2
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Mathematics