Find the equation in standard form of an ellipse centered at the origin that passes through the given points.(4, 6), (4, -10), (7, -2), (1, -2)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: D
Mathematics
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Solve triangle ABC. If necessary, round the answer to the nearest tenth. a = 6.9, b = 13.0, c = 16.2
A. No triangle exists. B. A = 22.3°, B = 50.9°, C = 106.8° C. A = 26.3°, B = 48.9°, C = 104.8° D. A = 24.3°, B = 50.9°, C = 104.8°
Mathematics
Add the given pair of complex numbers geometrically.z1 = -4 - 12i, z2 = 9 - 2i
A. 5 + 14 B. 5 + 10i C. 5 - 10i D. 5 - 14i
Mathematics
Simplify the complex fraction.
A. 
B. 
C. 
D. 
Mathematics
Find an equation of the line satisfying the conditions. Write the equation in slope-intercept form.Through (-5, -2); perpendicular to -5x - 2y = 27
A. y = 
x
B. y = 
x + 
C. y = - 
x - 
D. y = - 
x - 4
Mathematics