Find an equation for the ellipse described.Focus at (-3, 0); vertices at (±8, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: C
Mathematics
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Find the requested information using the law of cosines and/or the law of sines. Round to three decimal places.A triangle has sides a = 5 and b = 3 and angle C = 30°. Find the length of side c.
A. 2.832 B. 8.019 C. 4.584 D. 4.359
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Evaluate the function at the given value.f(r) = 
; f(-3)
A. -5 B. 1 C. -1 D. 5
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Find |u x v| correct to three decimal places where |u|= 18, |v|= 3, ??=80°.
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Solve the system graphically.
A. (4, -3) B. (3, 1) C. (4, 3) D. (3, 4)
Mathematics