Find a polynomial of least degree with only real coefficients and having the given zeros.2 - i, -6

A. f(x) = x3 + 2x2 - 19x + 30
B. f(x) = x3 - 2x2 - 19x + 24
C. f(x) = x3 - 2x2 - 19x - 30
D. f(x) = x3 + 4x2 - 20x + 30


Answer: A

Mathematics

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Multiply. Simplify, if possible.- 

A. - y
B. - y
C. y
D. y

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The equation has a solution r in the interval indicated. Approximate this solution correct to two decimal places.x4 - x3 - 7x2 + 5x + 10 = 0; -3 ? r ? -2

Fill in the blank(s) with the appropriate word(s).

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Find the missing parts of the triangle.B = 19.1°b = 10.49a = 16.03

A. No solution B. A1 = 30°, C1 = 130.9°, c1 = 24.23; A2 = 150°, C2 = 10.9°, c2 = 6.06 C. A = 30°, C = 130.9°, c = 24.23 D. A = 150°, C = 10.9°, c = 6.06

Mathematics

Solve the problem.Janet drove 312 km, and the trip took 4 hr. At what average rate was Janet traveling?

A. 78 km/hr
B. 79 km/hr
C. 1248 km/hr
D.  km/hr

Mathematics