Find an equation for the ellipse described.Center at (0, 0); focus at (-3, 0); vertex at (4, 0)

A.  +  = 1
B.  +  = 1
C.  +  = 1
D.  +  = 1


Answer: B

Mathematics

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Perform the indicated operation. Write the answer in standard form.(8 + 9i)(6 + 4i)

A. 12 + 86i B. 36i2 + 86i + 48 C. 84 + 22i D. 12 - 86i

Mathematics

Multiply.2

A. 2c + c + 
B. c2 + 
C. c2 + 
D. c2 + c + 

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Find the required part of the geometric sequence.Find the number of terms of a geometric sequence with the first term , common ratio , and last term 

A. 8 B. 9 C. 10 D. 7

Mathematics

Use the Factor Theorem to determine whether x - c is a factor of f. If it is, write f in factored form, that is, write f in the form f(x) = 5x4 - 7x3 + 17x2 - 21x + 6; c = 1

A. Yes; f(x) = (x - 1)(5x3 + 3x2 + 15x - 6) B. Yes; f(x) = (x - 1)(5x3 - 2x2 - 16x - 6) C. No D. Yes; f(x) = (x - 1)(5x3 - 2x2 + 15x - 6)

Mathematics